Joe no longer collects pickelhauben and his focus has changed to writing and publishing books on the Historical events of WW1 and Germany's role in the war. At least, this is my impression. It was very kind of him to give us digital copies of those lists. James, myself and our wives had lunch with Joe and his wife in Florida in Dec. 2021.
I noticed in the Kammer Marks for Pioneer units, there is no Kammer Mark for PB 11 presently available.
Could somebody add it to the list, so it would be seen when people search for it?
Here's my P11 marked haube, with Kammer Mark :
Feel free to add it to the list!