I have an old double 12 gauge with a Joseph Golcher lock on the left side. The right lock is marked G. Goulcher. Both are back action locks. I purchased the gun in 1968 for $25. I had to cut acouple inches off the end of the barrel because it was shot thin and splitting. I gave it the 'in a tire' proof test and hunted with it for a few years til the locks wouldn't hold ****. It's been retired since then as a 'maybe I'll get to it one of these days'.
There are a couple stamping marks on the bottom of the barrel but I haven't deciphered them yet. The furniture is brass, with engraving, but most of it is broken or missing. The stock is cracked at the locks, just not enough wood there.
I had thought about a rebuild, but am not sure if that is the right thing to do.
Paul