One thing of potential interest in decoding kindle serial numbers, is that the K1 (like the K2) has its REAL serial number printed on the back. Unlike the K2 and later which group their serial number into a long string of characters, the K1 groups the serial number into small batches of characters with spaces between them:
B0 01abcd efgh ijkl (or B1 01abcd efgh ijkl).
Probably not that useful, but another factoidal tidbit from the K1 "spelunking adventures".
