Yeah thats definetly one of mine!!
i think that was from the original batch of protos. If it has a second indent on the bottm then its one of those. The mark is where the 2nd screw eye was going to go, but decided on just one.
It was given to a buddy who fishes in newport. he confirmed he lost it at breyton point. so not sure where you found it, but sweet find either way.
he only had it for about 2 weeks, give or take.
its laminated pvc, not wood.
Again great find and enjoy!
all i find is used line and sinkers