[QuadList] Unknow mystery quad modules????

[Don Norwood]

Over on the oldvtrs list, someone pointed out this eBay item:  110459620505

Several of us immediately identified them, not as quad modules, but as VPR-7900 modules.  Then another member pointed out that they were the wrong size which caused me to take a closer look.  I have just checked the actual machines to be certain, and also checked the manuals and the Ampex part number guide.  Now, this has turned into a major mystery.   Here's what I can tell you with absolute certainty:

   1)  The style of the front panels is like the 7900 series (ground jacks and board function listed at the bottom of each module...they are upside down in the pic), but the module functions, layout and part numbers do not match the 7900 (or 7800) series.  They are also the wrong size.

  2)  The part numbers listed are all in the range of the part numbers used for the quad machines!  The part numbers for the 7900 series was entirely different.

The seller seems quite sure that these were from a 2" quad.  The part numbers seem to indicate that could be the case.  Anyone have any ideas?????  Perhaps something from special products division????  This is extremely curious!!!

Don
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