Please add reference code Jaeg 6 NWD (for Nordwestdeutschland) to Die Münzprägungen der deutschen Staaten vor Einführung der Reichswährung / Band 6. Nordwestdeutschland.
There is already a Band 6 Kurt Jaeger reference (Jaeg 6 FHI) but like the two Band 2 volumes (Jaeg 2 AB and Jaeg 2 FH) there isn't coverage overlap between the editions. Jaeg 6 FHI has Frankfurt, Hessen und Isenburg while this volume has Ostfriesland, Oldenburg, Jever, Kniphausen, Bremen, Hamburg, Lübeck, Schleswig-Holstein, and Lauenburg.
There are 16 coins in Numista with an incorrect J# code which are covered by this book. I suspect just replacing J with Jaeg 6 NWD is correct, but I will verify the type codes and make the changes once this reference is created.
