Kreighoff is a good guess with Röchling Steel.
I am not sure the year, but post WWI Simson had a monopoly in the Weimar Republic and I am not sure what the date was when other makers joined in the fray for funds.
Yes, from 1924 for 5(five) years the Weimar Republic saw a boom and it was referred to as the >>Golden Twenties<< but what about from 1923 - 1924? Still a big puzzle but the answers may lie with the Suhl Proof Facility? If the records exist for this period, the subject Daly 20 bore would be an easy search.
Serbus,
Raimey
rse
