Visiting a family friend a few days ago, and the conversation moved to her father in law, and how she still had his WWI revolver. She was more then happy to bring it out and show it. I'm not a gun expert, but still looks to be in decent shape. I understand the serial number of sorts on the left, but does anyone know what the '30' and the symbol means on the right? Stamped with his name, and "CMGC", or the Canadian Machine Gunners Corps.