The piece that goes across the round posts is the cross piece that clamps onto the coaming there should be slots in it where the J bolts go, on each end is the lee boards. Underneath is what looks like the old wood mast, if it is square at one end then it is the mast, I would advise getting a metal one. The rods with what look like sort of golf sticks, I have never seen these before. So I need to try and find out. Sorry I have not been able to as yet see your message. I get the impression this is a klepper frame from the early 60s. A very interesting site is
www.faltbootbasteln.de , the text is in German but it is well worth looking at to see lots of early folders and some not so early. One section on it is faltboot unter segeln and in one of the pic there it shows lee boards like yours.