I know nothing about the history of these engines. They came to me just like you see them. I included a picture of the metal box they were stored in. All of the 2 strokes spin freely and smoothly and have good compression. There are 2 Super Tigre .61s one of them is the old round head. The other 2 Super Tigres are .90s. The other round head engine is a Fox Eagle. I don't know what size it is. All I can say is the head is the same size as the Tigres. So I would guess it's in the .60-.80 range. I will take pics and measurements if you request a certain angle or view. The other engine is a Enya .53 for stroke. It feels like it needs bearings when it is turned over. It also has little to no compression. More than likely that is a stuck valve but that is only a guess. As you can see in the pic all of them have a ALUM spinner, prop and muffler. You will notice some long bolts in the motor mount holes in a few pics. This is how they came to me and was done so they would sit level in the storage try. There is some kind of oil in all of them for storage but I have no idea what it is. I am going to ask $350 for all 6 motors. I will split them up if you are only interested in a certain engine.
UPDATE: I have sold the 2 Super Tigre .90s but have the other 4. $125 will buy them and include shipping inside the USA.