Sceeter,
Military, contract and commercial S#'s are three different sequences and are not related to each other. The 'j' suffix on your 1917 Erfurt frame is part of a military S# sequence of that year. The 'i' suffix on Joe's Luger, made in 1921, is part of the commercial S# sequence that began in 1900 and ended in 1942.
__________________
Mike C.
|