1355
Proof Block Larger Than four 3d. black and brown, an imperforate plate proof block of six (3x2) on gummed watermarked paper; two small thins at foot otherwise fine. Very rare. Photo

細節
Proof Block Larger Than four 3d. black and brown, an imperforate plate proof block of six (3x2) on gummed watermarked paper; two small thins at foot otherwise fine. Very rare. Photo