AKA: Litton MONROE, AKA (Label): MODEL 425, ELECTRONIC DISPLAY CALCULATOR, Product number (P/N): 425,
Keywords/Tags: 425 | Litton MONROE
Date of intro: 1973, Origin: USA (List), Dimensions: 220x205x90mm,
Power: AC,
Display: Type = Display (Gas disharge) (List), Digits = 12+1,
Number of keys: 22, #Key-Brown: 22,
Decimal switch: [+-F-0-1-2-3-4-5-6], Miscellaneous switch: [(Blank)-ON .-(Rombus)],
Classification: / Desktop with Display,
Featuring: Procent,
Certification: 452B(UL) (List All UL's),
Known Serial-numbers: D501887 | D502134 | D693259 | H771608 | H772208 | H776606 | H862246 (List of all S/Ns from MONROE)
Collector value: 8/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: MALETIC Greg