Swiss SG26var 1854 10r. blue Strubel first Munich printing with grill SUPERB

1854 10r. blue Strubel first Munich printing lightly used with grill cancel in black fresh colour 4 large margins with white visible on each side A. von der Weid certificate SG 26var Zst 23Aa cat Sfr. 1 000++. Ex Dunlop