1851. 2 RBS Thiele. Plate I, no. 100. Type 10 “LARGE RETOUCH”. Excellent copy on cover with numeral 1 and blue FP 26.1.1855. ONLY 3–4 COVER WITH “LARGE RETOUCHES” ARE BELIEVED TO EXIST“. Certts. Nielsen and Møller ”A great rarity in a very fine and flawless condition“ [ 2b ] [ ✉ ]