I've been hunting a yard that has been very tight with coins but rather generous with other stuff.
I put the dime in for size reference... the key measures right about 5 inches and the gun is small. The gun actually works... I can cock the hammer and pull the triger. lol
Not quite sure the era of the military button. Perhaps WWII ?
The bracelet pieces are silver. I don't think the ring is... no stamp.
Definitely a fun day. I was never sure what would be coming out of the hole next.