This Model 12-2 is one of the rarest guns in my collection. This is one of the French Police over-run guns. The guns that went to France had a safety on the sideplate that looked like a cylinder release, but this gun didn't get that feature.
The original French order (125 pieces) were shipped in 1967, this gun sat in the factory vault for years before being shipped to Betts & Majors, Dallas, TX, on April 19, 1976.
I was fortunate to get this from Lyle Larkworthy a couple years back (Thanks Lyle!)