I didn't recognize a serial number starting with C. Perhaps someone else on the forum might know what company used that kind of serial number. If you have pictures that you can post here, that would help a lot. Especially photos of the decks, seats, inside stems, and the lines of the canoe.
If it is an Old Town canoe and the number is 025705, it probably would not have had the initial zero. The number 25705 was built in 1913 and shipped to Pennsylvania. That's an old boat, but it had open spruce gunwales and birch decks, seats and thwarts. It was a 16-foot CS (or common sense) grade OTCA. If you think the boat is that old, please post some photos.
The scan of this record is attached below-- click on it to get a larger image. This scan and several hundred thousand others 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/ot_records/ if you want more details. I hope that you and anyone else reading this will join or renew membership in the WCHA so that services like this can continue. See
http://www.wcha.org/wcha/ to learn more about the WCHA and
http://www.wcha.org/join.php to renew.
If you are selling your canoe and plan to use this build record information as part of an ad, please consider giving the WCHA credit for this information on eBay or craigslist or wherever your canoe is listed.
It is also possible that you could have another number or manufacturer if this description doesn't match your canoe. Feel free to reply here if you have any other questions.
Norm