This is a very rare head that was actually new, I had it sent into the lapping factory who gave it a very very light lap and polish just to take off some surface tarnishing as had been sitting in a box and I had to be sure it was perfect.
All tested zero wear and the result back from the lap guy was
" a really lovely rare example of an unused head"
all tracks perfect all tests show correct inductance's.
These were a hell of a price when new.
I was keeping this until I got a G24S which I have now but that's got low hours so can release this finally, remember the 24 was a £14000 pound unit in 1990'S money.
Just put a few photos on. battery just to give you an idea about size ,