ROCKWELL AIM 65 SBC trainer.
Mfg. year: 1978.
Everything still works.
(All these photos were taken 08/05.)

Hewlett-Packard 8085 SBC trainer.
The most rugged SBC I've seen.
It is housed in a well-made brief case
with an internal power supply.

Intel 8085 SBC trainer.
Mfg. year: 1976
It has lots of user hardware space...