Here you can find a summary of the marks, still unidentified for various reasons:
Only a mark/signature is present.
A mark/signature is translated from the Japanese, but needs a double check.
A mark/signature is translated, but no other information about the maker is available.
Time after time, makers with information collected about will be moved to the "Artists" section.
If you have any information on the marks/signatures in this section or can support on translation/double
checking, it is very appreciated if you contact me.