Lot 20923 – 1918/1923 Russian regions in Asia, study collection from the well-known German expert Richter with several stamps already signed as genuine or fake, including Azerbaijan with overprints and many seldom seen areas

1918-23 Russian regions in Asia, study collection from the well-known German expert Richter with several stamps already signed as genuine or fake, including Azerbaijan with overprints and many seldom seen areas and issues, a unique opportunity to acquire a treasure trove for the advanced collector (100’s).