Auction: 142 - March Philatelic Collector's Series Sale
Lot: 833
#217E, 1936 50c Sultan Khalifa bin Harub Silver Jubilee frame die proof in the issued color, affixed to part of the De La Rue appendix sheet which is endorsed "App´d for Die 28/8/36", also initialed and dated "27/8", very fine and unique; ex-De La Rue archives (S.G. #326E).
Sold for
$800