hull plate numbers

[Jay in Needham]

I just bought a ODay 15 with these numbers on the hull plate: 25027 and 222. Can any one tell me what these numbers mean and when the boat was built?

 

[PDuckX-DSI 3056]

Not an Expert, but

From what I have found on this site and others, those numbers would indicate that you have the 25,027th boat built by O'Day and it was the 222nd of that model. I have an O'Day Daysailer with the number 17,104 built in 1968 so I am guessing yours is in the early 70's just before they switched to the 12 digit identification number in 1972.