Welcome, the Old Town with serial number 164595 is a 15 foot long lapstrake outboard model boat in AA (or top) grade with a 54 inch middle deck and a keel. It was built in January, 1956. The original exterior was natural with clear varnish. It shipped on March 6th, 1956 to Washington, D.C. A scan of this build record can be found by following the link at the thumbnail image attached below.
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/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/about-wcha
to learn more about the WCHA and http://www.wcha.org/store/membership
It is also possible that you could have another number or manufacturer if this description doesn't match your boat. See http://www.wcha.org/forums/index.php?threads/15667/
for a similar boat. Feel free to reply here if you have any other questions.