1934 (October 13-17), 10th SAF registered cover from Kuwait to Brazil, franked by two air post values, Stuttgart (12.10) and Friedrichshafen (13.10) connections, red confirmation cachet, Pernambuco ''17.X.34'' arrival ds on reverse, VF and very rare, only a few such covers flown, Sieger #280, Est. $1,800-$2,400 (Image)