Heinrich Köhler 384 Auction – Day 2 Single Lots & Airmail and Zeppelin Mail – inclusive the collection of the Sieger family

½ a postal stationery envelope sent by registered post with boxed Jaipur registration strike on front additionally franked on reverse with 1926 3 a on 8 a bright violet with error surcharge inverted tied by native "KISHANGADH / 13 APR 34" cds with "SAWAI JAIPUR / 24 APR 34" delivery cds on reverse. Believed to be the only known example of this error on cover.