When does dirt become patina?
So I'm in the process of restoring an M 1891.And I finally got to cleaning the metal, and I can't determine what is dirt and what is patina because this is older than what i usually work on.
So I'm in the process of restoring an M 1891.And I finally got to cleaning the metal, and I can't determine what is dirt and what is patina because this is older than what i usually work on.