I need to complete a statement of ownership for the DMV and they require the year of manufacture. The vin tag reads "Built by O'Day Mfg. Corp., Fair River, Mass. for O'Day Corp., Boston, Mass. Hull# 6536, class 982". My guess is it was built in 1965. I have copies of the "Instructions for Rigging the Day Sailer (or any other rigging using a mastjack)" with a date written by hand "before '66" on the reprint if this is use to anyone. The trailer was last registered in 1983 and it was mfg. 1972.