Very large flap holster for discussion

[Bob A]

I'm attaching a photo of a Colt New Service revolver; they came in many barrel lengths, with the one depicted having a 5.5" barrel. Six-inch barrels were also made, as well as 4", 4.5", 5" and 7.5". The pistol was introduced in 1898, and, with some modifications along the way, was produced up to 1946.