Souvenir sheets issue \"50. Anniversary the Reich conference the Spartacus group\", variety \"unperforated\", with philatelic cancellation from first day \'BERLIN W 8 3.1.66.\' a pronounced rare souvenir sheet, the hardly ever offered becomes, therefore Michel unpriced, photo certificates George Schoenherr BPP and Koenig BPP: \"the quality is perfect. \"