What would the month he and am I reading it right to be a1960Is there a question? Your plate should tell you the year and month it was manufactured but in 1960 I don't think that info was required
I tried to look up the HIN ( https://hindecoder.com/ ) but as I suspected it did not come up with anything. Maybe someone else might have better luck but like you my best guess is 1960. To be honest, I don't know how you could tell how many like boat are out there?What would the month he and am I reading it right to be a1960