20x138B Rheinmetall identification request


Can anyone provide a definitive ID for these 20x138B cartridges, ideally with a source (book, manual, etc) for the ID? The headstamps (year and manufacturer, left to right) are:

  1. P 31
  2. S-18-1000-0P S 39
  3. P315 38
  4. P 382
  5. P 41
  6. P 35
  7. P 31


You should have a look at this website:


Nice cartridges! The first 4 are very hard to find.
I recommend you the book of J.B. Anderhub. It is the bible on 20x138B.


  • TP, for AA guns, Germany
  • APHE-T (German military color code) or AP-T (Finnish color code), export, depends on the exact variant (customer/user), likely made by Rheinmetall, this one here is for the S18-1000 AT rifle
  • TP-T, yellow tracer, for AA guns, Germany
  • TP-T, red tracer, for AA guns, Germany
    The remaining white and the 2 light blue ones are repaints.

Too bad the 5 on the right had their case necks tampered with.


Thank you both for the info!


For me, sp├ęcimens 1,3,4 are practice loads (dark green paint and upper the yellow ring you can see an Arrow), is it what you mean as writing TP?


Laurent, yes.
TP = target practice
TP-T = target practice - tracer