"RARE" Antique Old West Holster

This is a very rare H.H. Heiser 3 loop holster.  The age is such that there is no model number but it is clearly stamped.  The 2 loop holsters are common but these vintage or antique 3 loop are scarce.  Overall, the leather shows its age and it's missing the retention strap (easy fix for any leather worker) and there is no leg tie down though the holes are there.  I've treated it with mink oil and there's no rot or damage.  This fits large frame revolvers like the Smith & Wesson New Mod.3.  It's an uncommon piece of American old west firearms history.