AndyB
Senior Member
From the book of Carter the both models are in reality identical, only difference is probably the riveting of material, secure strap was by one cut off, which means in production period it has the secure strap mounted. The additional stiching could be from older material, anyway the parts avialable were used in same way to stich together. For me is 319 and 320 in reality one design. Questionable for me would be how the doubble layer of leather would be easy to bring behind the frog hook on scabbard. In case of thick leather it would be problematic.