TOPIC: What is year and Model# ?????

Hi All New to the Forum. I bought a 1971, 72 or 73 Seastar 15' Fiberglass outboard and it came on this Holeslcaw Trailer. It has no tags or VIN number. I have tride to google search for a model and year but nothing seems to match up. Definitely sized for a 15' boat or smaller. Any help appreciated. Chris