1915, G.R. MAFIA handstamp in black: 3r. blue-black and red, fresh color and good perforation, one blunted perf and one with soaked in gum at lower right, minor ageing, unused with fresh original gum, an exceptionally rare stamp with just 15 (David Field) issued or 20 examples (Bob Gibbs) believed to have been issued regardless of overprint colour; Gibbs estimates just 8 stamps were overprinted in black, signed Hoffmann-Giesecke a.o.
