This is a 'large frame' black leather holster suitable for the Webley mk VI service revolver or similar, typical of those used in WW1 and WW2. The oblong rather than 'D' shape shoulder strap brass fitting identifies it being more probably WW1 or earlier. Large frame holsters are longer in the barrel area to accommodate the longer barrels of the larger calibre revolvers. The leather is in very good condition for it's age with perfect stitching and brasswear, it just needs a good polish! No markings that we can find except for a 1 in a circle on the top edge of the holster.