"Aid for Municipal Kindergartens" miniature sheet with trial line perforation L 11 1/4 affecting stamps and sheet margin, unused without gum as issued, issue handstamp PSKOW-k- 3 12 41 in upper left margin, fox spot above left stamp and lilac ink spots on lower stamp, otherwise sound, format 121 x 162mm, major area rarity! Unsigned and photo certificate Walter Zirath BPP (2025) "Only very few sheets are known.", Mi. 6.000.-