Vintage Electronic Calculators:

Overview of Brands


COMMODORE: MM3R (version-2)
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AKA: commodore, AKA (Label): MINUTEMAN, Electronic Calculator, MODEL MM3R, Product number (P/N): MM3R,
Keywords/Tags: MM3R | MinuteMan 3R
Date of intro: ~1973, Origin: USA (List), Dimensions: 105x75x30mm, Weight: 150g,
Display: Type = Display (LED) (List), Digits = 8+1,
Number of keys: 17, #Key-Blue: 4, #Key-Red: 2, #Key-White: 11,
Miscellaneous switch: [ON-(Blank) K-(Blank)],
Classification: / Pocket,
Original Equipment Manufacturer : COMMODORE: MM3R (version-2) (List of all Export-OEM-models from COMMODORE), Resemblance with: J.C. PENNEY: MM3R (version-2),
Serie-members: COMMODORE: MM3R (version-1) ('cbm'-label); COMMODORE: MM3R (version-2) ('commodore'-label, rectangular keys); COMMODORE: MM3R (version-3) ('commodore'-label, oval keys),
Known Serial-numbers: 058653 | 071802 | 078752 (List of all S/Ns from COMMODORE)
Collector value: 7.5/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),


Label, name plate / Bottom
S/N: 058653

Created: 27-apr-2014, Manual-update: 13-aug-2020, Batch-update: 25-feb-2024             

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2 Pic(s),


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