Originally Posted by
rod_saetan
BTW, I see Sakae Litage isn't on the list, my '90 bonded aluminium road frame has serial 90900097 - these were fairly numerous and re-badgeg by a number of other brands including 3Rensho through the late 80s/early 90s. Probably too obvious to point out that the first two digits are probably the year of manufacture, huh?
It's not included because they haven't been reported. While it could represent the 90,097th frame of 1990, it could also be the 97th frame of September 1989 (i.e. ymmxxxxx), or something else. I need more serial numbers to raise my confidence in the correct interpretation,