here is a chrome plated 8x57 Exerzierpatronen dated 3 1894. The case has three knurled cannelures (two identical and a third much thinner). The bullet jacket is empty.
The closest specimen I could find is featured in the book by Windisch-Kellner-Micke-Platzer “Von der Patrone 88 zur patrone S” at page 23. It is also chrome plated with three cannelures and hollow bullet jacket : headstamp is “DM 12 11 S”. That specimen is identified as “Exerzierpatrone für Maschinengewehre”
Is it safe to identify my 1894-dated specimen also as a machinegun dummy ? As the headstamp does not feature the three segments, I suppose it is a re-use of an old rifle case and loaded as MG dummy much after 1900 ?
Any comment would be welcome,