Object consists of 5 parts: Monroe calculator, Monroe battery charger, Compucorp 392 tape player, carbon copy of Monroe service order and inspection record dated 12-8-78, and paper-covered, wooden (?) locking suitcase, with keys, containing all of the previous items.. Calculator has a DB-25-pin-S jack.. Tape player has a DB-25-P plug at the end of a cable.
Litton Monroe (calculator and battery charger).; Compucorp, a division of Computer Design Corporation (tape player).
U.S. (calculator).; Japan (tape player).
392 (tape player).
53 C is stamped on the back of the calculator, apparently with a rubber stamp, near the manufacturer's name and logo.
ASSY NO 3490125
ASSY NO 3490125 is printed on nameplate on back of battery charger.
ASSY NO. 8490450
ASSY NO. 8490450 is printed on nameplate on back of tape player