1931 Tirane-Rome overprint inverted, 3fr purple, lower left sheet corner margin block of four, n.h., gum toning (mostly light), also at upper right corner, fine-v.f. Only one sheet of 50 inverted overprints was printed in error, this obviously unique positional piece (catalogued as hinged singles) cat. $1100 (Cat No. C42a) (Image)

Cat. $1100, Est.$250