Very nice collection of felt pickelhaube in well preserved condition. I especially appreciate the photos of the insides of each and the YMCA Souvenir Tag. Thank you for sharing.
Best regards,
John
Your felt tip with the edge facing inwards is a Bambus. What's more, the cap is original, with the star-shaped stitching exclusive to Bambus!
Look closely under a good light, this cap is obviously marked with this manufacturer.
Look closely at the post cap and you'll see this mark.
To my knowledge, Bambus was the only manufacturer of felt: