Hi,
concerning both coins and banknotes, I am wondering about how issues by the ‘Bank deutscher Länder’ should be treated as they fall a bit between chairs, so to speak.
Already during the war, the allied forces (specifically US and Soviet Union) started printing banknotes and after the war also minting coins that are categorized under ‘Allied Occupation 1945 - 1949’ on Numista: https://en.numista.com/catalogue/ruler.php?id=3582
My first remark would be that this should probably be 1944-1948. The first notes were first issued in 1944 (https://www.moneypedia.de/index.php/Mark_der_Alliierten_Milit%C3%A4rbeh%C3%B6rde) and the last coins issued in 1948. The notes are denominates as ‘Mark’ and the coins still as ‘Reichspfennig’. They then get replaced in 1948 by the new ‘Pfennig’ and ‘Deutsche Mark’.
In May 1949, the Federal Republic is founded and gets the Bundesbank as central bank, which issues banknotes and coins henceforth, all correctly categorized under ‘Federal Republic 1949 - date’: https://en.numista.com/catalogue/ruler.php?id=2860
But between 1 March 1948 and May 1949, coins and banknotes (‘Pfennig’ and ‘Deutsche Mark’) are issued by the ‘Bank deutscher Länder’, which is founded by the three western allied forces (US, UK, France) without the Soviets and established in Frankfurt am Main. It's effectively the predecessor of the Bundesbank (https://de.wikipedia.org/wiki/Bank_deutscher_L%C3%A4nder)
Currently the coins are categorized under ‘Federal Republic 1949 - date’, which is wrong as the Federal Republic doesn't exist yet, and the banknotes I could find are either again under ‘Federal Republic 1949 - date’ or ‘unclassified’: https://en.numista.com/catalogue/index.php?r=bank+deutscher+l%C3%A4nder&ct=banknote
I would suggest the creation of a new period/issuing authority to give those coins and banknotes a proper home. Alternatively, make sure coins and banknotes are treated the same way and maybe add at least some explanation to whichever period/issuing authority they are subsumed under.
Cheers.

