https://www.bundesbank.de/en/bundesbank/numismatics/pictures-archive
Pictures archive of German notes and coins | Deutsche Bundesbank
Images from the online catalogue and the pictures archive can be used free of charge. Additional digital images can be produced for a fee.
notes and coinspicturesarchivegermandeutsche
https://www.cnb.cz/en/cnb-news/press-releases/Number-of-counterfeit-notes-and-coins-falls-again
Number of counterfeit notes and coins falls again - Czech National Bank
notes and coinsnumbercounterfeit