Originally Posted by
3speed
Well thanks for that info! That’s why I couldn’t find a Diamondback specific one. Now I’m able to date my Bridgestone anyway. Unfortunately it doesn’t match up for my Diamond Back, unless I’m misunderstanding something. I think I have a G where there should be a number. The first two parts make sense, though. The code dates it as an 83, and I’m pretty sure it is.
The serial number is correct. It was manufactured in 1983 by a company believed to be Tano. There is some speculation over whether the 'G' represents a month (May) or a forthnight (weeks 13-14). Either way, it should be a 1983 model. It is the same format and source as used by Centurion, Diamond Back's sister brand of road bicycles. Typically, this serial number format has not been reported on Diamond Back but if you look at Centurion it will direct you to manufacturer N(1), where your format is covered.
Edit: If you're looking to restore, I have the OEM specs.