The Old Town build record for serial number 163245 shows a 15 foot long lapstrake outboard model boat in AA (or top) grade with a 54 inch bow deck, a middle deck, a keel, outside stems, and a floor rack. It was built in March of 1955. The original exterior color was O. T. (Old Town) yellow. It shipped on May 16th, 1955 to Plymouth, Mass.
This scan and several hundred thousand more 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 will join or renew your membership to the WCHA so that services like this can continue. See http://www.wcha.org/about-the-wcha/ to learn more about the WCHA and http://store.wcha.org/WCHA-New-Membership.html to join.
It is also possible that you could have another number or manufacturer if this description doesn't match your boat. Feel free to reply here if you have any other questions.