07 June (Germany, Democratic Republic ) within release Sand And Sun From The State Mathematical-Physical Salon, Dre goes into circulation Stamp Kanzelsanduhr (1674) face value 5 East German pfennig
Stamp Kanzelsanduhr (1674) in catalogues | |
---|---|
Michel: | Mi:DDR 2796 |
Yvert et Tellier: | Yt:DDR 2439 |
Stamp is vertical format.
Also in the issue Sand And Sun From The State Mathematical-Physical Salon, Dre:
Stamp Kanzelsanduhr (1674) it reflects the thematic directions:
A clock or chronometer is a device that measures and displays time. The clock is one of the oldest human inventions, meeting the need to measure intervals of time shorter than the natural units such as the day, the lunar month, and the year. Devices operating on several physical processes have been used over the millennia.