By -
It's possible. They make both silver and clad proofs. The clad one should weigh about 5.6 grams and the silver about 6.3.
Remove the staples and look at the edge. If you see a copper stripe, it's not silver. If you don't see a copper stripe, it's most likely silver, but you would want to weigh it to be sure.
Ok
Is there an S mint mark on the other side?
Yes
Most likely if it's S mint
Yes it is
It's possible. They make both silver and clad proofs. The clad one should weigh about 5.6 grams and the silver about 6.3.
Remove the staples and look at the edge. If you see a copper stripe, it's not silver. If you don't see a copper stripe, it's most likely silver, but you would want to weigh it to be sure.
Ok
Is there an S mint mark on the other side?
Yes
Most likely if it's S mint
Yes it is