Has anybody PM'd Motofan with their data? I'm thinking that perhaps we should post the data here. That way, we may be able to detect some sort of pattern in the serial numbers. Additionally, that will provide some sort of data here for people looking for info.
Also, in my earlier post, I forgot to include the headset specs-- I think those should be part of the database as well.
I spent some time in the library today going through back issues of Bicycling looking for spec sheets. Found some good info which I will post later this week. One interesting thing I found: an ad in the January 1978 Bicycling for the Motobecane Grand Record. The ad shows a paint scheme and headbadge that I thought indicated a 1980's model. The downtube had those diagonal paint slashes near the bottom bracket end of things, and the headbadge was the rectangular plastic badge with the "M". I was under the impression that the round headbadge ran through the 70s, and that paint scheme began in the 80s, but my "impression" may have just been an unfounded assumption. Anyway, thought I'd pass that on. If that ad shows a 1978 Grand Record, then the last year for that round head badge was 1977. I suspect the serial numbers will tell us what year a particular bike is, if we can sort out their coding system.