It is a tarnish resistant alloy … once it is polished or tubbed, It
does no t show tarnish for a long time…unless you touch the piece
with your fingers a lot without wiping the jewelry afterwards…
I assume you would use Fine Silver 99.9% with the alloy you
are speaking of #s-88 correct alloy it back to 92.5 for Sterling,
with no tarnish, intesting !!
Yes, use 99.9 fine silver to alloy it with.