Type name / number: Adding and Listing machine, Continental 9S (hand driven)
Production / SN: P76985
Calculating principle: Rocking Segment with full keyboard
Calculating functions: Add and Subtract.
The machine performs direct subtraction, but shows complements rather than true values when the balance goes negative.
Input accuracy: 8 digits
Calculating accuracy: 9 digits
Extra's:  
Designer: John E. Greve (as well founder of the Astra-Werke)
Production year: 1930 - 1950
Case material: Aluminium
Weight: 9,5 Kg
External links:  
Previous owner: Mevr. Kraijenbrink, Eibergen, The Netherlands
Cosmetic imperfections:
(I accuse no one)
 
Date of receiving: 2010 march. The first machine I owned see the pdf file under documents.
Machine story: The ink lint was blocking the machine and a spring was loss. After fixing it the machine was working perfect. Cleaning the keyboards, exchanging missing an damaged key's. Exchanging printing mechanism partly with chrome parts. Exchanging the case rubbers. The whole machine showed to mevr Kraijenbrink, Willem and Ingrid. Their approval was achieved.

Content without guarantee! (UK); Inhalt Ohne Gewähr! (DL)