THIS PARTICULAR CALCULATOR WAS OWNED AND USED BY THE HASBRO INDUSTRIES (TOY COMPANY) DIRECTOR OF CREDIT 1969-1992.

INCLUDES ORIGINAL CASE, FRESH BATTERIES, OWNERS MANUAL, - SERIAL NO. M05567

JCE Mark II

The JCE Mark II is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 18 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is 5xAA batteries. The calculator was manufactured in USA.

JCE (John Colling Enterprises) located in Palo Alto, CA developed and manufactured only few portable electronic calculators around 1972. All known models (JCE Mark II, Percent, Super D) use the famous Texas Instruments KIXOR keypad and sport huge 8-digit LED displays. JCE went out of the calculator business sometimes in 1973 to 1974.

JCE Mark II

Display is 8 digits, red LED.

Power supply is 5x AA batteries.

4 functions.

Main integrated circuit is Texas Instrument TMS0103, here date coded early 1973.

82 x 139 x 42 mm / 3.25" x 5.5" x 1.7".

John Colling Enterprises, Palo Alto, California, U.S.A.

Facts at a glance:

Feature	Value
Type	Arithmetic
Functions	5
Keys	18
Precision	8
Logic	Algebraic
Display type	LED
Length	130mm
Width	83mm
Power Source	5xAA batteries
Country	USA
Year introduced	1972
Year discontinued	1974

JCE MARK II Version 1 “Klixon Vintage Calculator Complete Set WORKS M05567 SER.

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