Originally Posted by
T-Mar
At this point, all I can state is that it would appear to have been manufactured very early in a year that ends with a '1". We'll need photographs or a more complete description of frame features and/or components in order to try to determine the decade.
Fair enough and thanks. I need to up my post count so I can post pics and links.
It does have recessed brake bolts. Also, there's an embossed circle B seat stay caps with a short flat section. The thing that was throwing me off was the fork crown, which with no circle around the B, normally goes with a downtube lug that also has a B where mine just has a triangular cutout.
I found an identical frame in the restorations done by velociao.com identified as an '81 CDM 12v. ALL of the details match my frame, with the exception of the braze-on front derailleur hanger which was likely added later.