This looks like a GP-4, though I am suspicious that parts of it have been 
modernized.   The GP-4 had a drum memory.

Someone should grab the SEL machines:

There are a few 3C cards in the pallets of parts, and a few can be seen in the 
7th photo here:

Computer Control Company machines (e.g. DDP-124) were widely used in simulators 
in the mid/late 1960s, when many simulators for aircraft of that vintage were 
The computer itself is nowhere in sight, however.  Probably, all that remains 
are specialized simulator interfaces, with the PC in the last photo doing the 
computing.  :(


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