JohnG just posted this in another thread. I'll repost because it best answers the original question asked in this thread.
Funny enough, the information that's dead on Segway Social came from our community originally, so here it is again:
Structure of Serial Numbers: YY2WW1NNNNNN
YY: Year of manufacture (07 = 2007)
P: Manufacturing Plant (1 Manchester NH, 2 Bedford NH) All shipping units are most likely 2
WW: Week of manufacture (01...52)
1: Always "1" so far
NNNNNN: Real serial number, started with 000001 in March 2002 and incremented by one with each Segway produced.
