Reedcraft Boat Number

How may I ascertain the number of the Seahawk that I own.  Greg has said that from the keel lifting apparatus I have a Reedcraft.  The United States title to the boat says 1973 but gives no "number".  I have the original set of sails - might the number of the boat be found there?

So far as I know the sail number was the only number on the boat.  My Reedcraft has no number anywhere else.

Regards

Brian

I will look.  Thanx!