It was raced quite a few times in the not too distant past before being sold to a collector/racer in Europe.
I don't know if any of the members of NSR World would like to see another Bakker framed Honda as there seems to be a couple on this site already... can't quite recall what they are though... memory's not what it used to be...
The pics show the bike being rebuilt before it was sold.
Notice the ATAC chamber (the box with the 'X'). On the RS the ATAC valve was on the the top two cylinders only. The works NS500's had ATAC on all cylinders.
Hans Hummel cylinders.
Adjustable headstock. The frame is a work of art.
Looking at this work of art caused 'shakey hand' syndrome when photo capturing.