✅ SOLVED Round & heavy--size of a penny

[cjs811]

I am not sure what this is--it has a rusty cut through the first word.

 

[Bramblefind]

I think that is an American Express Co. lead seal.

See this-

Flying Tiger Antiques Online Store: 1890s American Express Co. Padlock Key & Lead Seal

SUBJECT: This is an 1890s American Express Company padlock and lead seal. The key has an oval head reads AM. EX CO. and the lead seal is roughly round and reads AM EX CO 833.


VINTAGE: Circa 1890s.


SIZE: Key: 1-15/16” height and 1-1/16” width; seal: 13/16” height and 11/16” width.

 

[BosnMate]

Agree, lead seal.

 

[cjs811]

Sure looks like it--thanks for the fast answer!!
Connie