Welcome, the Old Town canoe with serial number 225212 is a 16-foot long Guide model with a keel and two painter rings. It was built between June and July, 1979. The original exterior fiberglass was left clear to show the natural wood. It shipped on July 19th, 1979 to Webster Grove, Missouri. The back side indicates that it was damaged in shipment and resold (as-is) on July 29th, 1979 to St. Charles, Missouri. This was purchased on August 2nd, 1980 and moved to Belleville, Illinois. Scans showing both sides of this build record can be found below.
These scans 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 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 give you an idea of the value. A major factor will be how badly it leaks, which usually requires a water test. Usable canoes typically sell for much more than ones which need significant repairs. The archive at https://wcha.org/classified-archive/Old-Town-Guide.html includes the asking prices of similar canoes over the years. The final selling prices are likely to have been lower. One of the restorers listed at https://www.woodencanoe.org/builders-suppliers can probably help for a small fee if you need a written appraisal. Good luck,
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...