These aircraft were built in Egypyt after WWII, and vary in appearance depending on the engine used, and whether thay have the origianal faceted canopy like Will's, or the more modern looking plexiglass bubble.
At one time, there were 100 or so of these aircraft for sale in Egypt, and the US fuel-flow computer company Shadin were going to market them as the "Shadin Aeropony." That idea seems to have come to nothing. A friend here in Ohio then tried to buy them, but his offer was not accepted. I wonder where they are now?
Bestmanns have a LOT of wash-out!