anybody know what these are and value?

Bearsnum34

I went to a garage sale today and I found in a box 3 cards gold plated of bonds, griffey jr. and thomas. they were issued by topps in a box and the set is 3 cards and each card is very heavy it says topps finest on it yet they are made of very heavy material. On the very bottom it says holochrome. Does anyone know what these are worth? again , all 3 came in the long box and the set of 3 were issued via a mail-in.

any help would be appreciated.