We got a set of Sun-3/260 or Sun-3/280 boards. Unfortunately the backplane and chassis were not there when we found these boards.
68020 CPU board with monochrome video.
Ethernet controller is the Intel 82586.
16×18 NEC μPD41256C-10.
We got two of these boards, and the other board has yellow component socketed in the empty 8×2 socket in the left center by the backplane connector.
It looks like this is the tape controller board.
The board is composed of Multibus-to-VME converter card and the actual tape controller logic board.
This is a fixed disk controller, at least that's what I can tell.
This is a Multibus controller converted to the VME bus using the same board as the tape controller.
Looks like a large number of communication channels are available on this board.
A set of boards from the Sun GT Graphics Subsystem tower.
The second floor of the Rendering Pipeline Board
The framebuffer part of the GT Graphics Subsystem.
The VRAM is 64× Micron MT42C4084Z-12.