1875 8o slate & carmine, frame inverted, imperforate bottom margin block of four, top pair h.r., bottom stamps n.h., v.f., with 1993 Lasse Nielsen certificate (catalogued as imperforate singles, upright frame) cat. $600 (Cat No. 28b) (Image)

Cat. $600, Est.$250

1897 Svendborg Bypost local, 10r red and black, center inverted, right margin pane of 25, unused without gum as is commonly found, some faint staining on reverse mentioned for accuracy only, v.f., believed to be the largest known multiple of this error, with 2002 Philatelic Foundation Certificate (Image)

Est.$500