Heinrich Köhler 385 Auction – Day 1

“FIRST AERIAL POST U.P. EXHIBITION ALLAHABAD 1911”, three good strikes on two horizontal pairs and block of four Edward 3p. gray and two singles ½a. green on front and reverse of registered cover with boxed registration mark “R U.P. EXHIBITION CAMP ALLAHABAD” alongside to Coimbatore, stamps on reverse tied by arrival cds., adhesives minor imperfections, some aging, yet attractive and very rare, certificiate RPSL (2023)