Borda-Kreis um 1800 (historisches Fernrohr)
Stamp: "Borda-Kreis um 1800 (historisches Fernrohr)"
| Printed value | 40+20 Pfennige  |
Motif, Topic | Inventions |
| Circulation | 6.196.000 | Valid until | June, 30 - 2002 |
| Published | April, 10 - 1981 | Design | Heinz Schillinger |
Description
Borda-Kreis um 1800
From the series: "Für die Jugend, Historische Optische Instrumente"
Tags: borda-kreis fernrohr