Thanks for the tip Joe. I've looked at your posts many times, as I've undertaken a similar effort on my little ship. I won't be separating the deck and hull but I've gutted and rebuilt my entire interior. I did fine one number, but it looked kind of informal and I wasn't sure if it was a factory hull number or if someone was writing down a note while they built the boat.
The number I found is 647 in digits about an inch high and formed with dots (kind of like an old dot matrix printer does)... Is that the hull number? Does it mean anything or help date the vessel? Were they numbered sequentially from the beginning? I think mine is an early '70's vintage, but I may be way off.
Thanks again for the interest. I hope to be sailing before too long. But I still have a lot of work to do.