OP
I'm not RKmesa by a long shot, but might have an answer. SCSW 4th says 1940-1958 for the Blued steel knurled-handled screwdriver.
Bill Cross told me the first Aluminum knurled-handled screwdrivers were shipped in 1956 with the .357 Combat Magnum and the .44 Magnum.
Bill Cross told me the first Aluminum knurled-handled screwdrivers were shipped in 1956 with the .357 Combat Magnum and the .44 Magnum.
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