Whilst digging a hole for a fish pond, my wife has just dug up a WWII cartridge possibly 7.92mm. It has been fired.
It has a lot of corrosion but still quite readable, the head stamp reads as follows.
38 P 23 S⭐️ 18
The number P 23 is hard to read, but could be P 28, the same goes for the 18, it could be 13.
The length of the cartridge is 57mm and its diameter is 12.5mm at the head stamp.
After searching this site we think it may be of German origin.
If so, it might have been fired from a Mauser K98, MG34 or MG42.
Our farm was used by the allies under Glen Walker in 1944 as part of the battle of the hedgerows prior to the battle of Mortain. We are in Lingeard, which is just outside Saint Pois in Lower Normandie in France.
Our closest town is Saint Pois, and it was liberated on 5 Aug 1944.
Any help on identifying this cartridge would be great.