Very late post war bolo are like 1930, no serial on disconnector, nor sear. Not sure when the number on disconnector was dropped. Rule of thumb: if it's a very late bolo s/n near 700,000 range, unnumbered disconnector is probably valid. The bolt is supposed to be numbered on bolo though. Even those transitional 1930 have numbered bolt, and it's highly unlikely that number could be dropped in bolo and put back on 1930. Bolt is supposed to be numbered on correct bolo.
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