How much was the Coburg Badge sold at its time?

A second pattern Coburg Badge with a crisp RZM mark on the reverse with a solid pin set up. This was offered by a German dealer and has since been sold to a private collector. What is interesting is that there is a faint marking on the reverse in ink, indicating 3,60RM or 3.60 Reichsmarks. The Reichsmark was the currency in Germany from 1924 until 20 June 1948 and in Austria from 1938 to 1945. The Reichsmark was subdivided into 100 Reichspfennig. The Mark is an ancient Germanic weight measure, traditionally a half pound, later used for several coins. From 1871 to 1918 Germany was called the Kaiserreich or the Deutsches Reich. Although Germany became a republic in 1919, the term "Reich" remained part of the country's official name. We can fairly say that it is highly likely that the second pattern was sold for 3.60 Reichsmarks at that time from this badge.