"Red Cross" miniature sheet without watermark, variety "cross in stamp colour missing in upper border line", upper right stamp with plate flaw I ("X" instead of "K"), format 114 x 157 mm, mint never hinged, partly toned from storage, otherwise perfect condition, rare proof not yet catalogued in Michel, major area rarity, unsigned and photo certificate Walter Zirath BPP (2025) "A very rare proof. No other sheet is currently known to me."