Quote: I'm not an expert, but if this is a fake, it's a good one.
Looking at quite a few fakes I usually find the flaws quickly. Can't find any with current photos. As mentioned earlier, I too, don't like the nose on the OP's coin. Still, .
I'd agree with a 1930. Don't see any trace of a Mint Mark, so could be Philly. These are pretty common in this condition. Likely just silver melt value.
Glued or soldered nail on the coin to be used as a practical joke. The nail has since broken, but it could have been used to nail it to a board walk at the beach. Seen these many times, back in the 60's & 70's.
2015 Movie "Bridge of Spies" starring Tom Hanks, is a true story about the Russian Spy Rudolph Abel, who in 1957 used a hollowed out Nickel (Magicians Coin) to conceal micro film of U.S. Secrets destined for the USSR. Seen here are the movie stills showing Abel opening the Magicians Nickel with a razor and revealing the micro sized documents. Great movie, historically accurate and worth a watch. Directed by Steven Spielberg, and written by the Cohen Brothers. Kinda makes ya wonder, what was the purpose of some of the "Magicians Coins" that show up every so often, eh?
As E&V stated above, the weight would be much less if it were missing both clad layers, so must agree with just environmentally damaged. Compare the thickness of your coin to a standard quarter.
Agree with above, need far better photos and an accurate weight of the coin to answer your questions. Note: I absolutely do weigh every coin that comes across my collecting table. You never know.