Welcome and congratulations, the Old Town canoe with serial number 146846 is a 15 foot long, CS (Common Sense or middle) grade, fifty pound model with open spruce gunwales, a keel, and thwarts in place of seats. It was built between October and December, 1946. The original exterior paint color was dark green with a red cross in a white circle on the right and left bow. It shipped on January 7th, 1947 to Wayland, Massachusetts. A scan showing this build record can be found by following the link at the attached thumbnail image 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 http://www.wcha.org/store/membership to join.
It is also possible that you could have another number or manufacturer if this description doesn't match the canoe. Please attach some pictures if the original design is still showing. Feel free to reply here if you have any other questions. Good luck with the restoration,