Model 1

2 copies only:

First (model 1a):

   - August to October 1923: (16m dome), on the roof of the Zeiss factory in Jena

   - October 21, 1923 to January 1924: (9.8m dome), Deutsches Museum of Munich

   - January 1924: return to Jena factory

   - August to October 1924: roof of the Zeiss factory in Jena

   - May 7, 1925: Deutsches Museum of Munich (official opening)

   - WWII: safe storage (Deutsches Museum destroyed)

   - May 7, 1951: (temporary 10m dome), Deutsches Museum

   - 1956: (new 15m dome), model II ?? , Deutsches Museum

   - ?: on display in the lobby (Deutsches Museum).

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Second (model 1b):

   - May 23, 1926: Dusseldorf (under 29.8m dome...), during 6 month.

   - June 25, 1927: Liegnitz (13m dome), to end of September 1927 (Gugali exhibition)

   - February 20, 1934: The Hague (Netherlands) until January 29, 1976 (burn).

   - July 2018: Museon Museum (restoration)