I finally found the serial # on my 17' Old Town. It has sponsons and the # is 156654_17. The only digit that was hard to read was the second 5 and I'm pretty sure it's a 5. I'd love any information about the canoe that folks may be able to provide. Thanks in advance.
156654 was a 17-foot CS (or common sense, middle grade) HW model built in 1951 and shipped to Connecticut. It had a keel, a floor rack, and sponsons. The color was yellow and it had lettering and a black stripe.
If this doesn't match up with your canoe, we may try again with a different number. I only looked at this serial number because it was 17 feet and had sponsons.
The scan of this record is attached below-- click on it to get a larger image. This scan and several hundred thousand others were created with substantial grants from the Wooden Canoe Heritage Association (WCHA) and others. A description of the project to preserve these records is available at http://www.wcha.org/ot_records/ if you want more details. I hope that you and anyone else reading this will join or renew membership in the WCHA so that services like this can continue. See http://www.wcha.org/wcha/ to learn more about the WCHA and http://www.wcha.org/join.php to renew.
It is also possible that you could have another number or manufacturer if this description doesn't match your canoe. Feel free to reply here if you have any other questions.