Welcome and congratulations, the Old Town canoe with serial number 112396 is a 17 foot long, CS (Common Sense or middle) grade, HW model with western red cedar planking, open spruce gunwales, oak decks, oak thwarts, oak seats, and a keel. It was built between February, and June, 1933. The original exterior paint color design was similar to the one shown at
http://www.wcha.org/catalogs/old-town/designs/design40.gif which was known as the design number 40. It shipped on June 21st, 1933 to Scranton, Pennsylvania. A scan of 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. 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
http://www.wcha.org/about-wcha 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 this description doesn't match the canoe. Canoes with a family connection are always extra special. The sail rig is not mentioned on the build record so that was probably added after it left the factory. Feel free to reply here if you have any other questions.
Benson