FYI, that "unpopulated board" is not and never was S100, and has clearly
had some told contact fingers cut off.  Perhaps used as a source for
parts at some point.
You might want to join and post this to the "s100computers" Google group.
JRJ
On 1/23/2022 1:42 PM, Stan Sieler via cctalk wrote:
  Hi,
 I have a mystery S-100 computer that I'm would like to sell, from the
 estate of the late Ken Gielow (author of Z80DIS, a great Z80 disassembler).
 The proceeds will be donated to a non-tax-deductible magic group Ken was a
 long-time member of.
 The computer is located in Cupertino, CA (aka "the heart of Silicon
 Valley", in the S.F. Bay Area).   (If reopened, you can combine a pickup
 with a visit to the Computer History Museum in nearby Mountain View, CA! :)
 This would likely be quite expensive to ship.  I'd guess 30+ pounds.
 Photos and some info at:
     
www.sieler.com/ken_photos
 Some of the hardware (also listed on the above page):
     ThinkerToys buss
     unknown semi-transparent front panel
     spare/uninstalled Ithaca Intersystems DPS-1 front panel
     10 various boards inside
     metal case (heavy)
 There may be manuals on some of the boards and/or the Ithaca, but I'm not
 sure yet.  (They would be included, if they exist.)
 I wanted to take photos of each board, but having been seated for about 40
 years, they don't come out if I tug gently.  None have integrated board
 lifters, unfortunately
 (I tried a boroscope, but could not get useful photos.)
 Based on the labels on some EPROMS, there's a chance that it's a homebrew
 TRS-80 clone, with both Level II BASIC and CBASIC, and may have Morrow
 DISCUS software on it.
 We're looking for an offer on either:
     - the Ithaca Intersystems front panel;
     - the computer with all the boards
 or both.
 Suggestions welcome, thanks!