Not vintage. I've never seen the Mannheim badge, but these exact same drums are also sold new under the GP or Groove Percussion name as a student package with all the same accessories as that Reverb listing, so probably made in Taiwan.
This snare with various strainers and badges has been sold for at least the past 10 years.
Lots of them on ebay, or Sam Ash, Walmart, and many other retailers selling as GP drums.
Another thing: no German company would have used that font. Reminsicent of Nazi Germany, so a clear no-go. That font doesn't need to be Nazi-related, could also have a place in the Metal/Gothic scene, think "Rammstein", no expert there.