[flyingfrizzle]

Defiantly looks like someone added some additional 1708 lay ups to the stringers at some point. Owning two 60's moesly built hulls I can say there is wood 1"x4"in both of them. Same dark colored close grain looking wood like in the center keel of the 70's boats. Guessing its some type of fir. Most of it seems to have held up well for wood.