Old Town 22827 is an 18 foot CS grade canoe, which doesn't match your 16 foot canoe with mahogany gunwales, unless some drastic modifications have been made. Check the serial numbers on both stems. Posting pictures helps too... you may have a canoe by a different builder. There are builders who used short decks very similar to an old town, and many builders had five-digit serial numbers.
Kathy