David, The sail number is suppose to match the boat number '369'. My only question is............is the '9' clearly visible or could it possibly be an '8'? Other then that, I can't explain the difference between the sail number and the boat number. Skip M-15 #201 1982 Wild Guppy -----Original Message----- From: David Grah <d_b_grah@yahoo.com> To: montgomery_boats@mailman.xmission.com Sent: Fri, Mar 18, 2011 9:23 pm Subject: M_Boats: Dumb M15 Number Question I bought my Montgomery 15 about a year and a half ago. On its transom is MP153690686, which I think means it is a Montgomery 15, serial 369, built in une 1986. It came with red, white, and blue sails with the number 368 on them. When I managed to rip the old main about a year ago I bought new sails. When I id I couldn't figure out what numbers were right so didn't get any numbers on he new main. If I had, which should it have been, 369 (the serial number) or 68 (the old sail number)? Thanks in advance, because whenever I start thinking about this it bothers me! David Grah ishop California ______________________________________________ ttp://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats When posting, remember that there is no privacy on the Internet!