This is a nice little 11/23 (actually it's been upgraded to an 11/23+) in a short corporate cabinet with an RL02 drive.  I'll probably end up running a version of BSD on it since it seems to have the capability to do so.  It's in a 9 slot backplane with the following cards.
M8189 11/23+ Single board computer
M7551-AC 1MB RAM (22-bit addressing)
M8061 RLV12 - RL01/RL02 disk controller