Cheers for all the swift replies, while reading and switching between computers I lost my monitor
It took me two day looking round the loft to find this one, but dropping down to 1600 x 1200 is hard work. But as I am one of the few that still use CRT I hope to get something from ebay soon.
Thanks for all of the info, IIRC there is a printed board not membrane, the switches have ALPS and 24b and checking with some sites they are this type...
alps bigfoot.
It needs more of a clean so I will get a few more photos when its next open, I also have some other old mechanical boards some DTK's which I think are just rubber dome, a very large IBM style board that is branded Panasonic which is either buckling-spring or Alps.
I am also looking for a new board with Cherry blues for work, if I can get away with them.
Thanks for all the help.