Since someone is interested... here is a picture of my raft which must be from the same manufacturer. I have removed the thwarts which were glued in, and have added some additional seam tape and wear patches to the lower side. I have also added all the round D-Rings. There are no serial #'s. I am pretty sure the boat is hypalon or something very similar, because everything I have glued on seems to be super welded. The valves are are also short halkey roberts, although I have changed a few out for others.