stands for Contrini Officine Meccanica. It is a now defunct manufacturer in Gordone, It., 24 Via Aprille (SP?). Contrini was the name of the owner operator, first name Giovanni (I thnk).
Your pistol is a dead ringer for a Sheriff's Model I have from C.O.M. in .36. Date Code AC.
It was a sweet shooter until I experienced a chain fire event which loosened the arbor. It is now a wall hanger because I think the pistol is haunted.
Clean it up and shoot it. But use light powder loads.
My reading of history convinces me that most bad government results from too much government. Thomas Jefferson
Last edited by Doc Hoy; March 28, 2013 at 01:16 PM.