OK, here goes.
The first thing to note about this bastard is the size. It's huge -easily as wide as a 122-key keyboard and heavier than some computer systems on their own. It's far and away too tall to fit in a conventional keyboard tray, comming up over the top of the desk. The second thing is that it's definitely a typist's keyboard; easily as good as Big Blue's best typewriters (most of which I've used, except for the Executive and Composer). The action is smooth, the weigting perfect, with easier action than a model M and a more appealing click. In a word, it's awesome.
In the second photo you can see the rubber boots that exist below the keycaps. The keycaps with legends seem to be doubleshots, similar to the ones shown above. It's difficult to make out, but the stem is metal and the boot, which is thin and has degraded pretty badly, actually goes right over it.
The third photo shows the DA15 connector, which has lost its set screws somewhere in its life. My understanding is that they were very long and easy to use -either someone swiped them for something else, or they got knocked off.
