Craig:
For whatever you think it's worth at this point there is no such thing as cast hallmarks on genuine European silver. Not then and certainly not now.
I can't believe after the evidence presented regarding European hallmarking requirements than anyone would even try to rebut this now.
The marks on the chains of those "Huhnlein" daggers were bad when they were made,are bad now and will continue to be bad until hell freezes over.
Nothing you or anyone else can say will change that.
Jim