The Old Town canoe with serial number 168401 is a 16 foot long Otca model with a keel. It was built between January and May, 1959. The original exterior paint color was similar to the image shown at
http://www.wcha.org/catalogs/old-town/designs/design04.gif which was known as design number 4. It was shipped on June 30th, 1959 to Netcong, New Jersey and returned for repairs on August 24th, 1964. It was painted white and shipped back to Lodi, New Jersey on October 24th, 1964 after these repairs were complete. This canoe came back from New York City for more repairs on September 11th, 1968 and was painted similar to the image shown at
http://www.wcha.org/catalogs/old-town/designs/design46.gif which was known as design number 46. It was returned to Secaucus, New Jersey on January 28th, 1969. A scan of this build record can be found by following the links at the attached thumbnail images below.
These scans 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/catalogs/old-town/records/ if you want more details. I hope that you will join or renew your membership to 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.html to join.
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.
Benson