| Type name / number: | A51 |
| Production / SN: | |
| Calculating principle: | Rocking Segment, 10key Keyboard |
| Calculating functions: | Add, Subtract |
| Input accuracy | 10 digits |
| Calculating accuracy: | 11 digits |
| Extra's: | Input and result display |
| Designer: | |
| Production year: | +/- 1940 |
| Case material: | Metal |
| Weight: | 6.2 Kg |
| External links: | |
| Previous owner: | Karl-Dieter Schwake, Berlin, Germany (as extra available, picked up during our holidays) |
| Cosmetic imperfections: (I accuse no one): |
Perfect condition only a very little / minor harming of usage. |
| Date of receiving: | 2010 - may, |
| Machine story: | The machine was working perfect on arrival. |
Content without guarantee! (UK); Inhalt Ohne Gewähr! (DL)