random markings on haubes and what do they mean?

[weirdpyramid]

So there are helmet size markings, maker markings and unit markings but what about the other little markings that show up from time to time.....

For instance these markings. They look like "numbered edition" type markings that you would find in a book or a special edition item.

 

[Tony without Kaiser]

I would vote museum acquisition: 1970, April, item # 173 (of the year)

 

[weirdpyramid]

thanks Tony! makes sense but I guess not so interesting.

 

[weirdpyramid]

Here is another one found inside a Hessen EM 115th helmet.