Wow, I've not seen something like that before! At first I wondered if that was the actual blade or just the scabbard?
A shame you couldn't take a photo of the accompanying information, but perhaps there is mention of it on the museum's website....
Update...
Yes there is, and a clearer photo, but not much in the way of information sadly.
Production
1551/1600 (Gefäß)
Measurements
Width: 42 (Parierstange) cm
Length: 169,3 cm
Length: 114,5 (Klinge) cm
Material / Technique
Eisen, Holz
gekehlt
Here is the museum page for this sword
Hope this helps, and thanks for posting the photos.