It appears that the middle digit is the least clear and a search of the 88x13 records shows that 88913 is the only 17 foot long canoe in that group. It one shipped to Santo Domingo in 1926 with sponsons, a centerboard, sail rig, and lots of mahogany as shown below. Does your canoe have these? Can you confirm the length and provide some more pictures? This picture of the serial number was a bit fuzzy so a clearer one along with some overall pictures of the interior and profile would also help. Thanks,
Benson