Auction: 142 - March Philatelic Collector's Series Sale
Lot: 834
#217P, 1936 50c Sultan Khalifa bin Harub Silver Jubilee master die proof in the issued colors, affixed to part of the De La Rue appendix sheet which is endorsed "App´d for Colors 28/8", also initialed and dated "26/8", very fine and unique; ex-De La Rue archives (S.G. #326P).
Sold for
$800