Thanks!It's correct as the serial number on the barrel disappeared in 1942. It sounds like you have a 5 digit no letter block so early 1943 production.
1942 e-f block, exactly unknown, but several changes occurred between c-f blocks byf/42It's correct as the serial number on the barrel disappeared in 1942. It sounds like you have a 5 digit no letter block so early 1943 production.