I am hoping to put an age on a Grumman 15’ canoe, and though read the how-to’s posted a year ago on identifying a Grumman’s date of manufacture, find that the HIN (on the bow) does not follow what the conversation described. 5098-3-15. Does it mean 15’ length produced in March of 1950? The “8” might be a “B” (scratched). Appreciate any help with this. Betsy