THis might very well be a Multibus-I motherboard.  The Multibus-1 had two
connectors, of which only the 86-pin one was defined.  Naturally, Intel and
others "extended" the bus bu means olf the secondary (dual 30-pin)
connector, in some cases to interconnect two boards and in others to provide
additional addresses, etc.
-Dick-
-----Original Message-----
From: Mike <dogas(a)leading.net>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Wednesday, January 27, 1999 5:31 PM
Subject: ID request
 Hi.
The green and copper of a board caught my eye today at the local thrift. 
At
 first, I thought it was a four slot s100 motherboard
but on closer
inspection I find the four slots are 86pin and it has a block harness for
Gnd,+5, -12, and +12.
On the back is has:  LEE DATA, 60001460 Rev A, WL-10, 31/85.
Anyone know what this is for?
Thanks
- Mike: dogas(a)leading.net