Name | Issues/Designs | |||
Sonnblick Observatory | 1886 | — | founding - ... 75th d - Sonnblick..servatory 1961 syns. Observatorium Sonnblick, Sonnblick- Observatorium | |
Sonnblick- Observatorium
(syn. of Sonnblick Observatory) |
1886 | — | d - Sonnblick..rvatorium 1986 |