I suspected so though wasn't certain (newbie...) so thanks!! - It may be useful to others learning as I am!!
As Carlsson says: an absurd fake.
Here is the reverse of the Deschler before the early 1935 introduction of the M1 code for the RZM.
Above shown original DSM is in my collection.
The only DSM I have found in years, a superb example with orig Patina.
Glad to add this one into my loose skull eagle and skull eagle set collection, recently.
Amazing,, your collection is truly outstanding.
No its not my DSM anymore.
Ebay seller, today he refund my money and canceled the purchase.