catfish774 Posted January 19, 2019 Share #1 Posted January 19, 2019 Screw back, pin back and clutch back.....these are both clutch back and I am trying to ascertain which type would be period correct for 1945-46. Link to comment Share on other sites More sharing options...
Steve B. Posted January 19, 2019 Share #2 Posted January 19, 2019 Clutchback DUIs such as those you have, are generally post-WWII. Not always, but most of the time. The one on the left has a 3-character manufacturers code, D-22 in this case. That dates it to the 1960s or later because that’s when the 3-character codes were first used. I can’t make out the market nags on the other one. VERY broadly speaking, screwback DUIs are generally pre-war to early WWII. Pinbacks are pre-war to late 40s- early 50s, and clutchbacks are late 40s to the present. As always, there are exceptions. Link to comment Share on other sites More sharing options...
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