Is there a good reference for determining the authenticity of the early German States, especially the imperfs? Seems like this area is rife with album weeds and everyone says to check them. German language ok.
The goto site is https://www.stampsx.com/forum/index.php? You will need to register; it's free. There is a learning curve to the organization of the site. If you want a book, this one by Hermann Schloss is good, even though it is old:
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Posted 06/15/2025 2:23 pm
