The following description was prepared by William Gross:
Silver cups engraved with symbolic animals, both real and legendary, were often used for blessing the wine on Shabbat and Holidays. This example is engraved with a pair of rampant griffins on each side of a medallion inscribed with the Biblical commandment to "Remember the Shabbat and keep it Holy".
Inscription: Remember the Sabbath Day, to Keep it Holy (Ex. 20:8)