Grumman canoe serial numbers

Grumman canoe serial number? I’d like to find out the date of manufacture for: 13868-GP-5-17? It is a 17 foot grumman canoe Captain John is referring to boats built after 1972. Before 72, HIN # s were not standardized nor required. I researched a G-17 with the same configuration (xxxxx-GP-5-17) w/no HIN. Marathon Boat Group … Read more