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CCNL 337 has the same info I quoted from WBIII, Also CCNL 336 has great info on 1st block Winchesters.

Actually, according to the Winchester Log Book entries published in WB III, that date (23 Mar 1943) is the date that your Carbine's receiver was stamped with the serial #, not the date the complete...

Early 1943, I believe.

Don't try to remove the remaining spring portion from your pin. Early pins are quite desirable regardless of condition but the more complete the better.

Assuming that you are referring to the early trigger housing pin when you say friction pin, the early pin with the spring was originally designed to stay attached to the early trigger housing and not...