© Auktionshaus Ulrich Felzmann GmbH & Co. KG
 First German "Zuverlässigkeitsflug" testing of military aviation
1911 year| Bronze | 50.19 g | 50 mm | 
|   Location   |  Germany (1871-1948) | 
|---|---|
|   Emperor   |  William II (1888-1918) | 
|   Type   |  Medals › Commemorative medals | 
|   Year   |  1911 | 
|   Composition   |  Bronze | 
|   Weight   |  50.19 g | 
|   Diameter   |  50 mm | 
|   Shape   |  Round | 
|   Technique   |  Milled | 
|   Demonetized   |  Yes | 
|   Updated   |  2024-11-14 | 
|   Numista   |  N#395198 | 
|---|---|
|   Rarity index   |  100% | 
Reverse
7-line inscription in an oak and laurel wreath.
Script: Latin
 Lettering: 
 DEUTSCHER
 ZUVERLÄSSIGKEITS-
 FLUG
 AM
 OBERRHEIN
 10.-27.MAI
 1911 
Comment
Zuverlässigkeitsflug on the Upper Rhine where conducted between 1911 and 1914 to test the best mostly military airplanes.
In 1911 from 19th to 27th of May through the following course:
Baden-Baden – Freiburg – Mülhausen – Straßburg – Karlsruhe – Heidelberg – Mannheim – Mainz – Frankfurt/Main – Darmstadt
https://de.wikipedia.org/wiki/Zuverl%C3%A4ssigkeitsflug_am_Oberrhein