My guess is S.P. Lufin was the owner, as Fitz suggests. Tamping the owner's name into the bottom of the canoe is something I've run into several times... sometimes just initials. Looks like a nice, functional, guide-type canoe... doesn't seem terribly old to me, from the pictures. By "terribly old" I mean "not as old as I am". By the standards of eBay, I am an antique, so this sort of thing is a matter of perspective. I am thinking post-WWII... maybe '50s or '60s... but this is just a guess, based on "feel".