I would have to agree that at the very least your butt plate has been replaced as Long Branch No4’s came with ether a Blued steel or zamac(sp.?) one. Is your butt stock LB marked? Also to the best of my knowledge Canadian
FTR’s were not painted with Suncorite. The 4 or 5 in my collection are all Park’ed. In 1943 the original finish would have been blued.