Originally Posted by
Suburban105
Why would Schwinn put a stamp on a 1969 bicycle when it was a 1970?
Back then Schwinn didn't start building a given model years bikes until well after the first of the year. However in advance of actually building bikes it did accumulate parts and manufacture frame parts such as dropouts, which were stamped with serial numbers before being welded into frames. As such the serial number does not actually date the bike, it only indicates the month and year the frame part was stamped. Also while the Suburban name was new in 1970, what was essentially the same bike had been offered in 1969 and earlier as the Varsity Tourist.