AKA: 820 CD, Product number (P/N): 820CD (820 CD),
Keywords/Tags: 820CD (820 CD)
Date of intro: ~1973, Origin: Hong Kong (List),
Power: 9V + Adaptor,
Display: Type = Display (LED) (List), Digits = 8+1,
Number of keys: 18, #Key-Black: 6, #Key-Red: 1, #Key-White: 11,
Miscellaneous switch: [OFF-ON],
Classification: / Pocket,
Resemblance with: (Resemblance 039),
Serie-members: CALFAX: 820CD (version-1) (Vertical Switch); CALFAX: 820CD (version-2) (Horizontal Switch),
Known Serial-numbers: 282093 (List of all S/Ns from CALFAX)
Collector value: 8/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),