Featured Oil flask?

Any ideas? Has some oil in it like 3in1. Can't find anything on the flask symbol either.

Thanks

 

Could be oil, or solvent for cleaning guns out in the wild.
Some held both at the same time. Could be vintage Russian.

 

https://www.dsarms.com/p-16806-orig...bottle-metal-condition-varies-3-for-1000.aspx

 

Thanks, very much! Interestingly enough I got two other items. An old tire tube repair tool and a 1901ish monkey wrench. My guess would be some old timer passed away and his family donated these items. They were all next to each other on the thrift store shelf.