Lead Seal?

[Toothpick]

Not much to go on, but I thought I would give it a shot. It's about a half inch square.

Found it in a lake.



I think I can see US on one side.



The other side has some writing too, some on the raised and some on the flattened side.



Any ideas?

thanks

 

[Back-of-the-boat]

Almost looks like an impression from a button.I don't know about lead seals just giving my thoughts hope you get an I.D.