http://smith-wessonforum.com/attachm...1&d=1475615758
This is a G. Lawrence #120B 658 holster. I modified it's retaining strap to be able to use it with my S&W Mod. 27 6", by adding silver snap covers. I am ashamed that I modified it way back then, but only had a few holsters, and wanted to be able to use them all.
Chubbo