Austria, 1919, 228 P, 3 h, overprint proof, mint never hinged, certificated Soecknick, ex austrian postal archiv, RRR! (Image)

Austria, 1937, 649 PU, medical men, imperforated, unused without gum, Black printing, Single proof on small sheet, imperforated, centre printing, as issued, ex offical postal archive (Image)

Austria, 1937, 650 PU, medical men, imperforated, unused without gum, Black printing, Single proof on small sheet, medical men, imperforated, as issued, ex offical postal archive (Image)

Austria, 1937, 650 PU (2), medical men, imperforated, unused without gum, Black printing, Single proof on small sheet, imperforated, centre printing, as issued, ex offical postal archive (Image)

Austria, 1937, 651 PU (3), medical men, imperforated, unused without gum, trial color, not the final engraving, Black printing, all Single proofs on small sheet, imperforated, centre printing, as issued, ex offical postal archive (Image)

Austria, 1937,652 PU (3), medical men, imperforated, unused without gum, trial color, Single proof on small sheet, imperforated, centre printing, as issued, ex offical postal archive (Image)

Austria, 1937, 652 PU, medical men, imperforated, unused without gum, Black printing, Single proof on small sheet, imperforated, centre printing, as issued, ex offical postal archive (Image)

Austria, 1937, 653 PU (3), medical men, imperforated, unused without gum, trial color, Single proof on small sheet, imperforated, centre printing, as issued, ex offical postal archive (Image)

Austria, 1937, 653 PU, medical men, imperforated, unused without gum, Black printing, Single proof on small sheet, imperforated, centre printing, as issued, ex offical postal archive (Image)

Austria, 1937, 654 PU (3), medical men, imperforated, unused without gum, trial color, Single proof on small sheet, imperforated, centre printing, as issued, ex offical postal archive (Image)

Austria, 1937, 656 PU, medical men, imperforated, unused without gum, Black printing, Single proof on small sheet, medical men, imperforated, as issued, ex offical postal archive (Image)