The Old Town canoe with serial number 173494 is an 11 foot long fifty pound model with a keel. It was built between November, 1963 and February, 1964. The original exterior canvas covering was painted dark green. It shipped on April 26th, 1965 to Keene, New Hampshire. A scan showing this build record can be found below.
This scan and several hundred thousand more were created with substantial grants from the Wooden Canoe Heritage Association (WCHA) and others as you probably know well. A description of the project to preserve these records is available at
http://www.wcha.org/catalogs/old-town/records/ if you want more details. I hope that you will donate, join or renew your membership to the WCHA so that services like this can continue. See
https://www.woodencanoe.org/about to learn more about the WCHA and
https://www.woodencanoe.org/pricing-plans/join to donate or renew.
It is also possible that you could have another number or manufacturer if this description doesn't match the canoe. Feel free to reply here if you have any other questions.
Benson