Hi Bob
I have a Heiser leather leg of mutton case for a two barrel set---very nicely tooled---came with a Model 21 I bought a few years ago---case is in exceptional condition. I had not heard of them at that time but I now realize their great quality and collectability.
Mine is marked " H H Heiser, Maker, Denver, Colorado" and under this is marked 745 and under that the number 3. Any idea when it was made---my guess is before WW 11. The M21 was made in 1956 so maybe the case was made for the gun, and maybe not. Is a tooled case uncommon? I presume the 745 is a model number but what does the 3 stand for?
I see that the Heiser company still exists but I doubt that they make gun cases any more.
Cheers
Bill