the serial # stamped on the side is 211786. This stamp is very deep which suggests the hull is thick (~1/8") and made of Royalex. The riveted tag # XTC11786_76G. The space reflects a rip in the tag but it is likely the number 1 that's missing. The bow has the same logo as shown on the 1977 catalog you referenced. I measured it again and found it to be 17'2". So, I believe you correctly identified the model but with one reservation: my canoe is a mustard yellow which is not pictured in the catalog