Evidence is not questionable in this case. And it is very clear they were cast. Nor pressed, nor die struck. Cast. The only very detailed and sharp areas are those hand finished, and almost each ring (especially '30 style) has some. We shouldn't complicate what is clear and no need, IMO, strange combos of production processes.
No one will ever answer your question, but you can do the same question for tens of ugly pieces made during the Reich. For example the Bandenkampfabzeichen, one of the most rare badge is for sure the worst ever made.
Cast awards of 3reich are made in zinc based alloys, not silver. That is completely diferent story, diferent casting temps, diferent machines etc. For example the Bandenkampfabzeichen is made on pressure injection machine, machines like that does not exist for silver casting even today. Pressure injection machine capabilities stops at aluminum. And those are big, complicated machines for big amounts of pieces made.
There are less original rings than you think, much less...
