Looks more like the 18' Chipewyan Royalex hull to me. The 17' Royalex (Oltonar) boats were the Tripper and one of the Penobscots, both of which had different stem shapes from this canoe. Also, the only boat in the Chipewyan lineup which had two thwarts was the 18 footer. The rest just had a single center thwart. When the Royalex line started, and for several years, the seats and decks were white ABS or rigid vinyl. Gunwales were tan vinyl and those on the longer models had a piece of aluminum extrusion inside for extra strength and stiffness. The later version (beginning around 1980 or so) had tan, roto or blowmolded polyethylene seats which were filled with foam. Rumor was that the metal molds to make them cost $8K each, so they only made two, a bow seat and a stern seat. They were positioned in the different models wherever they would span the distance between the gunwales for that particular model. Decks at that time were also changed from the white ones to a tan polyethylene casting, which was tougher and a better fit. Gunwales stayed the same and were pop-riveted on. Sometimes they could nest bare hulls to some extent and ship them cheaper than finished canoes. I spent many an afternoon installing gunwales, seats, thwarts and decks on Old Towns at our shop.
It's hard to say exactly what's going on with the red gunwales. The Old Town gunwales had virtually no outwale, so these are not original. Whitewater paddlers like wide outwales as they do add some serious splash protection, so maybe that's why these were replaced. The easiest material to do that with is wood, but it's hard to say much more without seeing the boat. Royalex will age and get brittle if it eventually gets too much sun exposure, but if it looks to be in decent condition and the price is nice, the canoe may be worth picking up.
