Wanted to share some photos of this very rare and very interesting keyboard I got today.
Judging by the markings on the PCB this was made in 1988. It has vintage black switches and a linear white spacebar switch. It is the only board known to have the famous clear switch tops.
The keycaps are fairly thin and are a mix of doubleshot and engraved/infilled. You can see the caps lock switch is tripleshot (or doubleshot with another method used for the window). I don't know the material.
You can see that some of the keycaps have o-rings. All keys did have these originally, but they are just rubber.. Over time they started to disintegrate. There are no fully intact ones on this board.
Overall, very interesting keyboard. Probably the most interesting one I own. The switches are without a doubt the best linears I've used. They are perfectly smooth, lubing does not improve them.A few pics below, the rest here
: https://www.flickr.com/photos/115722906 ... 966202859/