Having produced replacement A500/A500+ and A600 keyboard membranes in 2013, it seems that there is another slightly different version of the green A600 keyboard membrane - I have had a couple of people in Australia and one in the USA ask about these.
They are identified by the Mitsumi model number of 56c471A and have a larger left hand shift key, and a different ENTER key as can be seen on the attached photo
[ATTACH]4995[/ATTACH]
I have obtained a quote for 50 of these membranes - but the end price would be £30 plus postage (in contrast to the existing A600 membrane, which was produced in larger numbers and therefore has a price of £20 plus postage)
Interestingly, the keyboard membrane is also marked A300-A which suggests that this was perhaps the first keyboard made for the A600....
In order to guage interest, we have set up a pre-order page at:
http://www.sellmyretro.com/offer/details/%5BPRE-ORDER%5D-Commodore-Amiga-A600-Green-Keyboard-Membranes----Mitsumi-model-number-56C47A-13716
Is there now enough interest to start something similar for A1200 keyboard membranes? So far as I understand, AmigaKit has now sold out of their NOS keyboards!