Mystery Harman 120 Bike

I found these pics while cleaning up my harddisc,
no idea whose bike this is,
but it has a Harman 120 motor and even John
Harman's signature on the bill of sale

Mystery solved;
Marcus from Germany E-mailed me the following info:

The bike is called Double Vision and
was built by John McKay in the 80`s.

http://www.mckayscyclecreations.com/

The Engine was offered a few month ago on Ebay
for $11.000 but nobody bought the engine.