I think I should phrase the question in a bit different manner as to not put folks on the spot...
Have any of the collectors of SS Dienstmützen come across this type of marking on a chinstrap before? I find reference to other markings but can not yet account for one like this.
Not really a "is this genuine" question but rather a desire to be pointed in the direction of where something describing the choice of markings may be mentioned in literature of the period.
I've not seen this particular design of RZM stamp on any chinstrap that I've handled before but with the amount of these originaler RZM Stahlschlag Stempel vom WK2 -top Rarität on eBay (end time 22-Mar-11 18:00:38 GMT) on the market currently, I'm expecting to see a whole lot more RZM stamped items in the future!