[Milsurplus] Ident if possible??

[Joseph Lutz]

I have came across a box containing a lot of plug-in
PC boards still wrapped in bubble wrap and in their
individual envelopes.  Each envelope has contents,
and possibly {?} a FSN???
Example:

401-23207-01
A7 FORMATTER AND SELF-TEST 
P/C ASSEMBLY
QTY:  1 EA.
COMM.  3/76

401-23209-01
A9 PITCH CODE DECISION 
P/C ASSEMBLY
QTY:  1 EA
COMM.  3/76

[[THERE ARE NOT/NOT ANY CLASSIFIED MARKED
PC BOARDS, AND I THINK THEY WERE F/U/W 
SOMETHING LIKE A KY-7??]]

Anything ring a bell?
tks,
Joe W7LPF