Well, personally, I am not aware of dialogues of Yiddish, I only know of Yiddish and Ladino (Ashkenazim and Sephardim) but if it is silver as in the song The Silver Wedding it would be Zilberne (Di Zilberne Khasene). of course it could be Silber as the noun and it could be Zilber (just as it could be Di Silberne Khasene).

Being from Milwaukee originally, I knew a few people who were Yiddish speakers and I had a good friend who spoke Ladino (he was from the Italian Dolomiti, from Pordenone).

When I get a chance, I'll ask a friend who plays Klezmer music, which is correct.

CB