This is a long shot, but for a few years now I've been searching for a half-canister (not F-canister) to complement my rare, early M1941 (Coleman 520). It's one of the original 1,200 nickel-plated examples from the first US Army order. For comparison I took a pic alongside a later example. F-canisters are a lot easier to find! Any tip is much appreciated!! Thanks in advance. Jerry