| Type name / number: | Prima-20 |
| Production / SN: | |
| Calculating principle: | Rocking Segment and Ten key keyboard, round printing heads |
| Calculating functions: | Add, subtract, Automatic multiply |
| Input accuracy | digits |
| Calculating accuracy: | digits |
| Extra's: | |
| Designer: | |
| Production year: | |
| Case material: | Aluminium and Plastic |
| Weight: | Kg |
| External links: | |
| Previous owner: | Collector, Overijssel |
| Cosmetic imperfections: (I accuse no one) |
Normal scratches |
| Date of receiving: | 2015-03-30 |
| Machine story: | 2014-04-13 Machine was blocked but with minor effort it was back in functioning again. Cleaned and oiled here and there and calculation check passed. |
Content without guarantee! (UK); In halt Ohne Gewähr! (DL)