Yes, we know it's only about 400 Euro.

But what is it? A home-made special or something else? That skid plate is pretty unusual, no?

ebay link

And yes, if I had more room in my garage I'd go get it...

Seriously? No one knows anything about this bike?

Well, to me it just appears to be an M49 which someone has cut off the bottom frame rails and added their own bashplate and updated the exhaust and cylinder head to M80 type like they did with the 'kit' that was offered to customers to update their M49 to a slimline - or maybe now it has an M80 type motor fitted. Fuel tank off something else and a seat unit made out of alloy - similar in appearance to the Homelite unit that was fitted to UK bikes around 1974 (except that was welded to the tank as a tank/seat unit) Non standard silencer.

The rest appears standard Bultaco. I prefer the look of the standard bike.

So this wasn't a modification by one of the trials tuners of the time?

The bash plate has so much fabrication I can't imagine this being a one off.

I also can't tell if the engine has been raised in the frame.

Are these similar to the changes in the Majesty bikes?

I'd say it's a one-off - certainly never seen anything like that offered by Bultaco - it took them until 1999 to copy Miller by getting rid of the bottom frame rails and use a seperate bashplate.

The only thing that looks to be altered chassis wise is the fitting of the bashplate, engine doesn't appear to have been moved from original position and suspension mounts are unaltered. I'd have thought the opposite about the bashplate, it's that over done that it would be very costly to to produce, more like a one-off.

Major changes to create the Majesty were rear shocks repositioned and engine/frame cradle lifted 2". Steering angle altered on a very few Yam framed bikes, probably supported riders only, later Godden frame had different angle from original Yam frame