I have a question and I know I can get the answer here. I'm trying to find out when the different
DI fasteners were used. That is, when were pinback, screwback and clutch back DIs worn?
I'm sure this subject was in the Trading Post. I have Trading Posts back to the '80s, but I
don't recall this subject. I think screwbacks and pinbacks were worn around the same time.
With pinbacks continuing into the 1950's. Clutch backs coming along in the 1960's. But, I
was wondering if clutch backs were used earlier. I thought clutch back collar brass was
worn in the 1940's. So I thought that was the case with DIs too. I hope this question makes sense.
I'm trying to determine what time frame my DIs are from. Thank you for any info.