The Deutsche Mark and Pfennig coins of the Federal Republic of Germany, issued since 1950, all had the full country name - Bundesrepublik Deutschland. But that country was founded in May 1949, so the first Pfennig coins after the currency reform, dated 1948 and 1949, simply referred to the issuing bank, the Bank deutscher Länder. (Images: Bundesbank)
In the Deutsches Reich, the Rentenmark was introduced in late 1923 that aimed at ending the hyperinflation period. New Pfennig coins were issued which would say "Rentenpfennig", see
here. When the Reichsmark came in summer 1924, the designs were continued but the text changed to "Reichspfennig", see
here. That continuity was important; people should not think of the Reichsmark as "yet another currency reform" ...
Christian