1840's Antique Poland Silver Jewish Passover Kiddush Cup Beaker COMPARE ,640

Description

An exciting and important find. This incredible "hallmark 12" cup measures 3.6 inches high and is 3.5 inches wide. Shown in the first two photos for comparison is this cup next to another 12 cup I had for sale which has since been sold (the height of that cup was 2.8 inches).
This IS NOT a cup for Elijah, because if it was, it would of stated "Kos Eliyahu" ("Cup for Elijah"). Instead, it reads "Kos Shel Pesach" ("Cup for Passover"). Any religious Jew knows that there are very strict rules regarding the amount of wine you must drink for the Four Cups during the Seder service, it being of a certain minimum amount. That is the reason this cup (the largest 12 cup I have ever seen), is so massive; it indicates that the owner was quite serious in following the rules regarding the amount of wine that must be consumed for the Four Cups. Shown in the first auction photo is a typical Polish kiddush cup that sold at auction; notice the similarities in the shield shape, the dense scrollwork, and the pair of animals flanking the shield. The second auction photo is from the Sotheby's sale of a few months ago, where a much later cup sold for ,000. The last auction photo is from an auction in Israel where a much later cup, sold for ,640 (,000 hammer + 27.4% buyers premium)
I cannot locate any beaker cups marked 12 for Passover anywhere, including museum collections or past Judaica auctions going back to 1949 (I have hundreds of catalogs).