Hello everyone,
I found a problem with the Duchy of Pomerania.
The problem is that the Duchy technically existed way earlier already, it got its independence in 1005 from Poland. The problem is that it doesn't have a wikipedia page of itself, as a lot of information are unknown. But we know that coins were minted in that Duchy, as evidenced by the Dannenberg Pommern catalogue.
The first ruler of the (first) Duchy of Pomerania remains unknown, but the first one that was documented was called Siemiomysł. The exact borders of his realm remain unknown, but it likely extended somewhat like the polish West Pomeranian Voivodenship. Since 1093, they were forced to pay tribute to the Obodrite prince Henry, but they weren't directly controlled by the league.
https://en.m.wikipedia.org/wiki/Obotrites
https://en.m.wikipedia.org/wiki/History_of_Pomerania
From that moment on, things stayed that way until 1121, when the Duchy of Pomerania was founded. This one is in the catalogue, linked above. Now, I don't know what to do. Should we just agree to add the three Pomeranian coins to an issuer Duchy that was founded 100 years after they were minted, or should the admins add a new issuer. If that's the case, there is no known flag or symbol for them.

