Congratulations!
The 12XXX serial number indicates your canoe is possibly circa 1914. I've logged your canoe into the Morris database. If there are any unusual features or more pictures you can share, please do.
Note that the serial number plate has the long side perpendicular to the splay of the stem. In the Morris database, this is seen in a few 11XXX and 12XXX series canoes, so there was possibly some worker who chose to tack it on that way... doin' his own thing.
It appears a flag holder once was located where the hole is, that currently holds a rope. The flag holders are diamond-shaped.
December issue of Wooden Canoe will have a story about CJ Molitor and BN Morris canoes.
Kathy