Well, it's not the dirtiest keyboard I've ever come across, that's for sure.

Interesting key lettering colour choices, yellow, blue and black.

Has MX Blacks and cherry stabs. Spacebar and capslock are also plain black switches.

Almost every key is doubleshot. For some reason left control, left shift, page xmit and F15 are lasered.

Opened up it's surprisingly clean.

Wyse-branded PCB.

They actually labeled which each keyswitch position is on the back of the PCB. Kind of a nice touch.

And the case is ABS plastic, made by Loong Sheng on January 28th, 1986.

Being a terminal board I haven't any idea if it works or not yet, I haven't a teensy. It is surprisingly clean compared to the PCE I got at the same time.