Key chain and ring? Platinum?

[TrinityBigfoot]

I found this earlier today. It appears to be very sturdy and no apparent discoloration or tarnish. Above the .950 mark it shows what appears to be a z above a z and 36. Is this platinum? It's 19.2 grams.

 

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[trdking]

Run a platinum acid test on it or take it to a pawn shop and they will do it. Not likely platinum. It should weigh more. Cheers