Miseremini,

Thank you for this information.  Do you have any more on the beggar?  Having just checked my Dolours Rosary the relevant medal does indeed feature a beggar which I had never noticed before despite saying the chaplet Wednesdays, Fridays and after confession.

In this 19thC publication there is no mention of him but the third septet is clearly about the Blessed Mother's loss for three days.

Wow, how about that. But surely this leaves a lot of serious questions to be answered.
Why is there no Glory be to the Father in the seven?
How much of all those conditions and indulgences did Our Lady dictate?
Did the Church confirm all these indulgences?
Where does this leave the five decades rosary?
I never heard of any indulgences attached to it.
Most Catholics say this 5 rosary, I have been saying it all my life,
especially on the first Saturdays in the church after Mass.
Are there any indulgences to be gained from it?
How come few Catholics are made aware of the seven sorrow rosary?
How many souls could have been helped from Purgatory
 if the seven sorrows was the known rosary asked for at Fatima?
Surely the Seven Sorrow indulgences would make the five decade rosary redundant
unless it carried the same indulgences?

I can see you are not one to question things, cassini!!!
The 'Glory be' is suppressed by the Church in some Masses and Offices in times of mourning eg Passiontide, Mass and Office for the Dead.
Indulgences are not granted by Our Lady but by the Church, using the power of the Keys. We can be certain that prayers are approved by the Church if they carry indulgences.
The five decade Rosary is also highly indulgenced. It is by no means redundant but, on the contrary, one neglects it to his own peril. No prayer has been so highly and repeatedly praised by the Church and the daily recitation of the Rosary was the specific request by Our Lady at Fatima who revealed herself to the children as 'Our Lady of the Rosary'.
Our Lady said of Francisco, when Lucia inquired, that he too would go to Heaven, but that he would have to say many Rosaries first.
I recommend that you get yourself a copy of the Raccolta, which is a collection of all the Church's indulgenced prayers:
https://angeluspress.org/products/raccolta
Consider joining the Rosary Confraternity. You will find all the information you need here, and also some information about indulgences attached to the Rosary: https://dominicansavrille.us/what-is-the-rosary-confraternity/

The Raccolta, and other pre-Vat2 sources, confirm the indulgences that were granted to the Seven Dolours rosary.  

The most highly indulgenced rosary was the Franciscan Crown as Tertiaries could gain a plenary indulgence every time it was recited, later extended to all those present at its recitation in Franciscan churches.

AFAIK the earliest grant of a plenary indulgence for the 5/15 decade Marian Rosary was Pius XI, 4 Sep 1927, to those who recited it before the Blessed Sacrament after confession and communion. 

The new rules on indulgences kept the plenary indulgence for the Marian Rosary when recited in a church or in family or group.

From the same Raccolta 1857

 CHAPLET OF THE SEVEN DOLOURS.
It was about the year 1233 that seven holy men of noble birth, by name Bonfiglio, Monaldio, Bonagiunta, Manetto, Amadeo, Uguccio, and Alessio Falconieri, withdrew from the city of Florence into the solitude of Mount Senario, receiving afterwards from the Church the appellation of the "Seven Blessed Founders." For it was in that solitude that, passing their days in the constant exercise of prayer, penitence, and other virtues, they, by a special revelation from the Blessed Virgin, instituted the Order called "Servants of Mary," taking for the object of their institution, meditation on the bitter pains she suffered in the Life, Passion, and Death of her Son Jesus, and, undertaking to promulgate this devotion amongst Christian people. One of the devout practices which they made use of for their purpose was a Chaplet or Rosary of Seven Divisions, in remembrance of the seven principal Dolours of the Blessed Virgin, which were to form the subject of the reciter's meditation according to his ability; the prayers to be said during such meditation being one Pater noster and seven Ave Maria's for each division, with three more Ave Maria's at the end of all, in honour of the tears shed by the same most holy Virgin in her Dolours.
This devout prayer, so acceptable to our most holy Sorrowful Mother, and so useful to Christian souls, was propagated throughout the Christian world by these Servants of Mary and it afterwards received much encouragement from Pope Benedict XIII., who, in order to induce the faithful to adopt it more and more, granted by his Brief Redemptoris, of Sept. 26, 1724 -
i. An indulgence of DAYS for every Pater noster, and the same for every Ave Maria, to every one who, having Confessed and Communicated, or at least made a firm resolution to Confess, should say this Chaplet in the churches of the Order of the Servants of Mary.
ii. The same indulgence of 200 days to be gained by all who shall say it any where on Fridays, during Lent, and on the Feast and Octave of the Seven Dolours of our Blessed Lady, and -
iii. An indulgence of 100 days, on any other day.
Lastly, the same Pope added -
iv. An indulgence of seven years and seven quarantines to any one who says this Chaplet either alone or in company with others.
Afterwards Pope Clement XII., " that the faithful might often recollect and sympathise with the Dolours of Mary," confirmed by his Bull of Unigeniti, Dec. 12, 1734, the before-named Indulgences, adding also the following:
v. A plenary indulgence and remission of all sins to every one who shall say this Chaplet daily for a month together, and shall then, after Confession and Communion, pray for holy Church, &c.
vi. An indulgence of 100 years, every time it is said, to all who say this chaplet, being truly penitent and having confessed, or having at least made a firm resolution to confess their sins.
vii. An indulgence of 150 years, every Monday, Wednesday, Friday, and Feast of Obligation of the Holy Church, after Confession and Communion.
viii. A plenary indulgence all who say it four times a week, on any one day in the year when, after Confession and Communion, they shall say the said Chaplet of Seven Dolours.
ix. An indulgence of 200 years * also to those who shall say it devoutly after their Confession.
x. An indulgence of ten years to those who keep one of these Chaplets about them, and are in the habit of saying it frequently, every time that, after Confession and Communion, they shall hear Mass, be present at a sermon, accompany the Blessed Sacrament to the sick, make peace between enemies, bring sinners to Confession, &c. &c.; or whenever, saying at the same time seven Pater noster's and seven Ave Maria's, they shall do any spiritual or temporal good work in honour of our Lord Jesus Christ, the Blessed Virgin, or their Patron Saint.
All these Indulgences Mere confirmed by decrees of the S. Congr. of Indulgences issued at the command of Pope Benedict XIV. on January 10, 1711. and Clement XIII.. March 13, 1763. It is, however, requisite, in order to gain these Indulgences, that these Chaplets should be blessed by the Superiors of the Order of the Servants of Mary, or by other priests of the Order deputed by them; and when blessed, they cannot be sold or lent for the purpose of communicating these Indulgences to others, as in that case they would lose the Indulgences. See the above-named Brief of Benedict XIII.
* In some summaries of these Indulgences, and more particularly in that reprinted in Rome in 1518, we find 150 days and a few lines after, 200 days; but in the Bull above named published at the Office of the Reverend Apostolic Chamber in 1135, we find in both places not days but years.
WAY OF SAYING THE CHAPLET.
Act of Contrition.
O my Lord, Thou who alone art most worthy of my love, behold me standing before Thy Divine Presence all in confusion at the thought of the many grievous injuries I have done Thee. I ask Thy pardon for them with my whole heart, repenting of them purely for love of Thee, and hating and loathing them above every other evil of this life, when I think of Thy infinite goodness. As I would rather have died a thousand times than have offended Thee, so now I am most firmly resolved to lose my life rather than offend Thee again. My crucified Jesus, I firmly purpose to cleanse my soul as soon as possible by Thy most Precious Blood in the Sacrament of Penance. And thou, most tender Virgin, Mother of Mercy and Refuge of sinners, do thou obtain for me the pardon of sin by virtue of thy bitter pains; whilst praying according to the mind of so many holy Pontiffs in order to obtain the indulgences granted to this thy holy Rosary, I hope thereby to obtain remission of all pains due to my sins.
1. With this confidence in my heart, I meditate on the First Sorrow, when Mary, Virgin Mother of my God, presented Jesus, her only Son, in the Temple, laid Him in the arms of holy aged Simeon, and heard his prophetic word, "This One shall be a sword of pain to pierce thine own heart,'' foretelling thereby the Passion and Death of her Son Jesus.
One Pater noster and seven Ave Maria's.
ii. The Second Sorrow of the Blessed Virgin was when she was obliged to fly into Egypt by reason of the persecution of cruel Herod, who impiously sought to slay her well-beloved Son.
One Pater noster and seven Ave Maria's.
iii. The Third Sorrow of the Blessed Virgin was when, after having gone up to Jerusalem at the Paschal Feast with Joseph her spouse and Jesus her dear Son, she lost Him on her return to her poor house, and for three days bewailed the loss of her beloved only Son.
One Pater noster and seven Ave Maria's.
iv. The Fourth Sorrow of the Blessed Virgin was when she met her dear Son Jesus carrying on His tender shoulders the heavy cross whereon He was to be crucified for our salvation.
One Pater noster and seven Ave Maria's.
v. The Fifth Sorrow of the Blessed Virgin was when she saw her Son Jesus raised upon the tree of the cross, and Blood pouring forth from every part of His Sacred Body ; and when then, after three long hours' agony, she beheld Him die.
One Pater noster and seven Ave Maria's.
vi. The Sixth Sorrow of the Blessed Virgin was when she saw the lance cleave the Sacred Side of Jesus, her beloved Son, and when taken down from the cross, His Holy Body was laid in her purest bosom.
One Pater noster and seven Ave Maria's.
vii. The Seventh and last sorrow of the Blessed Virgin, Queen and Advocate of us her servants, miserable sinners, was when she saw the Holy Body of her Son buried in the grave.
One Pater noster and seven Ave Maria's.
Then say three Ave Maria's in veneration of the tears which Mary shed in her sorrows, to obtain thereby true sorrow for sins and the holy Indulgences attached to this pious exercise.
V. Ora pro nobis, Virgo dolorosissima.
R. Ut digni efficiamur promissionibus Christi.
Oremus.
Interveniat pro nobis, quaesumus, Domine Jesu Christe, nunc et in hora mortis nostrae, apud tuam clementiam beata Virgo Maria Mater tua, cujus sacratissimam animam in hora tuae Passionis deloris gladius pertransivit. Per te, Jesu Christe, Salvator mundi, qui cuм Patre et Spiritu Sancto vivis et regnas, &c. R. Amen.
V. Pray for us, Virgin most sorrowful.
R. That we may be made worthy of the promises of Christ.
Let us pray.
Grant, we beseech Thee, O Lord Jesus Christ, that the most blessed Virgin Mary, Thy Mother, may intercede for us before the throne of Thy mercy, now and at the hour of our death, whose most holy soul was transfixed with the sword of sorrow in the hour of Thine own Passion. Through Thee, Jesus Christ, Saviour of the world, who livest and reignest with the Father and the Holy Ghost for ever and ever. Amen.

I attached the PDF of the Raccolta, 1910 edition......
 
261. The Rosary of St Dominic.
This Devotion, called also the Psalter of Mary, consists
of the continuous recitation of the Ave Maria, said 150
times (as many times as there are Psalms), divided into fifteen
decades, each beginning with a Pater noster, while at
the same time the principal mysteries of the life, death and
resurrection of our LORD are meditated on.
To gain the following indulgences beads must be used,
though in the case of several persons saying the Rosary
together it 1s sufficient if the person leading the Devotion
uses them. They must, except in the case of i, have been
blessed by a Dominican Father or other priest duly authorized.
Persons incapable of meditating may gain the indulgences
by merely saying the Rosary devoutly. Such persons should
however endeavour, in some measure, to acquire the power
of meditating.
i. Five Years and five Quarantines, for a third part, five
decades, of the Rosary (blessed beads not necessary). T.Q.
ii. 100 Days, to all who say the fifteen, or at least five
decades for every Pa/er and Ave.
iii. Plenary, to all who say five decades every day for a
year, on any one day in the year. I, II, IV.
iv. Ten Years and ten Quarantines, once a day, to all who
say five decades in company with others, either in public or
in private.
v. Plenary, on the last Sunday of every month, to all who
are in the habit of saying with others, at least three times
a week, five decades. 1, I, III, 1v.
vi. 100 Years and 100 Quarantines, once a day, to all
associates of the confraternity who devoutly carry a rosary
about with them.
260 Leo X, Br. August 20, 1516; ; ; 713; SPI
IX, Prop. Januarv 2 1848; Pe KHL Mech ye DUE
61 Sixtus IV, Bl. May 12, 1479; Benedict XIII, April 13, August 13,
1726, May 26, 1727; Pius IX, May 12, 1851, January 22, 1858; Pius X, July
31, 1906; June 12, 1907.
THE ROSARY 239
vii. Plenary, to all associates who say the Fifteen Mysteries
in the course of the natural day, for the triumph of the
Church: 5 T5 ITIH.
N.B.—The indulgences attached to beads blessed by the
Canons Regular of the Holy Cross (see No. 193) can be
gained simultaneously with the Dominican indulgences, i.e.,
while reciting the Rosary, provided the beads are blessed
with the two blessings. (Pius X, June 12, 1907.)
Note. —Indulgences vi and vii, with many others not recorded
in the Raccolta, can be gained only by members of
the Confraternity of the Holy Rosary. To enjoy the privileges
of this confraternity it is only requisite that a person’s
name be entered on the Dominican Register, and that the
beads should be blessed as above.

* In some summaries of these Indulgences, and more particularly in that reprinted in Rome in 1518, we find 150 days and a few lines after, 200 days; but in the Bull above named published at the Office of the Reverend Apostolic Chamber in 1135, we find in both places not days but years.

Amazing...If in fact this rosary was indulgenced in 1135, that's a hundred years before the Servites order was even founded.  Devotions are usually only indulgenced when they are already in common use.  We may never know how old this rosary is.  Perhaps it is because of this devotion that the Servites were founded.  Hummmm?

We do know however, that devotion to Our Mother's sorrows was the first devotion to and requested by Our Lady herself shortly after her assumption into Heaven, when she appeared to St John the Evangelist and requested it, as told to St. Elizabeth of Hungary and confirmed by St Alphonsus de Legouri.  It was at that time that Mary requested from her Son the four promises to those whose so honoured her.
As recent as the 1980's when Mother appeared in Kibeho Rawanda she specifically requested that the Seven Sorrows Rosary be prayed.