Welcome and yes, the lowest Old Town serial number record is 1604 as shown at http://www.wcha.org/forums/index.php?attachments/30108/ which shipped in 1906. It will probably take more than a serial number alone to identify your canoe. Can you provide any pictures of the serial numbers and surrounding areas from both stems along with some showing the decks, interior details (seats, thwarts, etc.), and profile of the stems? Most canoes with low serial numbers like this are from Charles River area builders. Can you tell us anything else about this canoe? MGC asked about this one previously as described at http://www.wcha.org/forums/index.php?threads/15252/ so he may have additional information. Thanks,