The scanned records only go up to 210999 so no one here can tell you much about your serial number 215849. You can send $3 to the factory and they should be able to send you a copy of the build record. The address and part number are listed at http://www.wcha.org/identify.html if you want more information about contacting the factory.
The Coast Guard's identification number will start with XTC and the last two digits should be the year when it was shipped. My guess is that your canoe is probably from the mid-1980s.
Feel free to reply there or here if you have any other questions.
Thanks so much for responding to me so quickly. The last two digits of the Coast Guard identification number are "71," so I guess that's when it was shipped.
Actually, the chart at http://www.wcha.org/catalogs/old-town/oldtown_chart.html indicates that an Old Town that shipped in 1971 should have a serial number between 180,000 and 190,000. The Coast Guard's formats have changed over the years so you may need to look at the last three (or four) digits. If yours are 871 then it may have shipped in January of 1987.
The last two digits of the year are usually embedded near the end of the Coast Guard number. Can you take another look at the serial number on the stems or bow, the Coast Guard numbers from the starboard stern, and post them all here? Thanks,
The serial number is 215849. The Coast Guard number is XTC15849M771. Hope that helps. The serial number is pretty faded and a bit difficult to read, but I believe that it is correct.