“Very Rare 1975 Harley Davidson MX250 Prototype located at our shop in California. This bike is original and in very good condition. We found this bike in Japan and exported it to California. These bikes are extremely rare, not too many were made. Also I don’t think there are too many bikes left in this condition. More info is available on our website.”
I went to their website and it had the exact same write up as above. I asked the question through eBay, do they know: How many were produced? What makes it a prototype? What history do they know about it being run?
On eBay for $8 grand to start but still has a reserve, in Santa Ana, California.