I doubt that THOSE chalices (in the picture) were ever "used for Holy Sacrifice"; they appear to be Novus Ordo wine goblets used for their Memorial Meals. And they're most likely not even gold-plated, much less gold, for that would be an affront to poor people everywhere.
The Chilean communist poet [sic], Pablo Neruda, was an avid collector of nice chalices for use at his banquets. Now these, yes, were consecrated chalices, made of sterling silver, gold-plated and with the enamels and jewels customarily found on our traditional Catholic altar ware. Of course, they came from pillaged churches during the Allende communist dictatorship. Don't know where they ended up--in a museum or melted or sent to mother Russia, maybe.
A lot of valuable religious items were sent to Russia by the commies during the Spanish Civil War before Franco and the Nationalists could stop them. But he did rescue the left hand of Saint Teresa of Avila which was on a Soviet ship in Málaga laden with much wealth and religious items and ready to sail to Russia. Franco attacked the port, conquered, and saved these looted things for Spain. He kept this relic with him during the rest of the "reconquest" but returned it after the war to the Carmelite convent in Ronda from where it was stolen.