Welcome, the Old Town canoe with serial number 160273 is an 18 foot long, CS (common sense or middle) grade, Guide model with a keel. It was built between June and August, 1953. The original exterior paint color was G. S. (Guide's Special) green. It shipped on April 13th, 1954 to Detroit, Michigan. A scan showing 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 as you probably know well. 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 https://www.woodencanoe.org/about to learn more about the WCHA and https://www.woodencanoe.org/shop to donate or join.
The information at the link below and similar canoes listed at https://www.woodencanoe.org/classifieds should help you value it. Feel free to reply here if you have any other questions.
One of the most common questions that gets sent to the WCHA webmasters is "how much is my old canoe worth?" Tim Hewitt's responses over the years have included the following comments:
Any wooden or wood/canvas canoe in usable condition is worth $1000 - $1500. A canoe that is documentable will go on the high end, one that is particularly rare will bring more, up to $3000 for a wood canvas canoe, and as high as $5000 for an all-wood canoe. These high end canoes must be in showroom condition and you must have evidence or documentation of their age and...