AKA: MARK 55, AKA (Label): mark 55, ADVANCED SCIENTIFIC CALCULATOR, Model No. MARK 55, Product number (P/N): 55,
Keywords/Tags: 55 | MARK 55
Date of intro: ~1975, Origin: Japan (List),
Display: Type = Display (LED) (List), Digits = 10+1+(2+1),
Number of keys: 30, #Key-Black: 12, #Key-Blue: 8, #Key-Red: 1, #Key-White: 9,
Miscellaneous switch: [on-(Blank)],
Classification: / Pocket / RPN (Reverse Polish Notation),
Featuring: Scientific functions, Procent, Square root, PI, Memories: 10,
Known Serial-numbers: J016926 (J-016926) | J028742 (J-028742) | J036439 (J-036439) | J500734 (J-500734) (List of all S/Ns from APF)
Collector value: 8/10,
Internet: Link-1: SMITHSONIAN MUSIC, Link-2: LE RAYON DES CALCULATRICES

!!! This item is WANTED to join the collection !!!