Nox hits deep, not sure on what

[Rockford]

Went out today with the 600, switch up from the D2. Area ive pounded that has yielded some silver. No coins today, a few deep nails and this? Hit like a silver dime at 8 inches, but was 15 inches. I knew it was ill fated when the pin pointer was slow to catch up to it. Its not aluminum. I see some threads on the inner lip. Nickel in pic to show size. Hit really nice.

 

[Ronstar]

Fuel cap from the old style GI cans????

 

[pulltaboo]

Yay, you found their space ship!

 

[Rockford]

Yeah cap of some sort, old.

 

[Odanscoils]

Went out today with the 600, switch up from the D2. Area ive pounded that has yielded some silver. No coins today, a few deep nails and this? Hit like a silver dime at 8 inches, but was 15 inches. I knew it was ill fated when the pin pointer was slow to catch up to it. Its not aluminum. I see some threads on the inner lip. Nickel in pic to show size. Hit really nice.

Galvanized pipe cap maybe.
Ring high from the zinc lead heavy coating

 

[Mark kus]

Looks like the fill hole on a cars gas tank?
Mark