In 1980, I started police work with a 4" Model 19 and bought a Safety Speed Clamshell holster...remember them? LAPD used them at the time. A VERY fast holster, and secure for the weapon retention techniques that were just being taught then.
We transitioned to Sig P220's in '86, then Glock 22's...
Weigand Custom
I also have one of these, made back in 94 / 95. Sent my stock 640 (SS / steel frame .38) to Jack Weigand and he added the Hybra-Port barrel, .357 ejector rod, action job, chamfered chambers, polished the pins and trigger. Put on the Spegel stocks. Only difference from yours is I...