In Germany a blank 33 did not have a primer crimp.
They can have a primer crimp when the cases had a bad quality so they could not use them for ball loads. Could you please show the bullet from the Polte load?
@ Mayhem. The first known “lot” was made in November 1923.
It was not a lot but the month of producing.
This changed in 1926. In this year the old stock of WW1 cups went to his end and they start making brass again with 72% copper instead 67%. A marking on the 72% cases is the star behind the “S”. This has nothing to do with “recycled” brass.
If the wooden bullet is the same as the other, the Polish blank was probably made under German occupation in Poland.
The P316 were made of so called left over’s. If a lot was produced always more cases were made than used. They were put together and were loaded as a blank 33 (Platzpatrone 33).
Your P316 cartridges have a Primer 30 black, and no primer crimps.
The “107” is Io1 as orpheus72 explained.
@ orpheus72, I don’t know where you get the steel analyses, but for the three you mentioned they are;
1 = C 0,19 - 0,24 %,Cu 0,25, Mn 0,6%, Si 0,12%, P 0,03%, S 0,035%
2 = C 0,08 - 0,12 %,Cu 0,25, Mn 0,6 - 08 %, Si 0,15%, P 0,02%, S 0,025%
17 = C 0,17 . 0,22% Al 0,1% other like #1
It is not so important.