German 13mm AT Rifle Variations

#1

I found two weathered inerted 13mm AT rifle cases and after cleaning I noted the different neck crimps.
I have not seen these differences noted before on the forums.

The loaded cartridge shows no mouth crimps. Headstamped P 9 18 T67
The fired cases are both headstamped P 11 18 T67. Look like unfired pulled bullet cases.

One has six small crimp marks. The other has 3 deep slit crimps.
Why would the same last month of production use two different bullet crimps ?

#2

Here in the US a large number have been emptied of powder & the bullet nicely replaced by friction fitting. So the only easy ways to tell are shake or ding with a fingernail.

The crimps you show do look like a proper crimp, but for what little it’s worth, I’ve not seen them before. Being fired cartridges they may have been recharged & not properly resized to obtain the proper friction crimp after the bullet was pulled?

#3

My mistake. The two cases have original unfired primers with projectiles removed.
They came from Europe originally.