100 Polish Zloty with Ludwik Warynski?

I have a 100 zloty bill with Ludwik Warynski on it, is it useable in poland it says 1988 r. on it.and the bill is sort of yellow..?

Not any more . It's relic of communism. But I suggest to keep it - in the near future you could sell it on ebay maybe..

I would not do that . If You polish zloty became silver .

I guess it's hard for a paper bill to become silver .