King Alfonso XIII - Blue Control Numbers on Backside issue, Kingdom of Spain, 1901

The King Alfonso XIII - Blue Control Numbers on Backside issue comprises 12 postage stamps released by the Kingdom of Spain on 1 January 1901. The StampWorld catalogue lists 12 stamps in the issue (StampWorld numbers 204–215), printed in 12 design types.

Values and colours recorded for the issue: 2C brown; 5C green; 10C red; 15C blackish blue; 20C greenish black; 25C blue; 30C green; 40C olive green; 50C greyish blue; 1Pta purple red; 4Pta brownish violet; 10Pta orange. Design: Bartolomé Maure. Engraving: F.N.M.T. Perforation: 14. No watermark is recorded. Quantities issued, as recorded: 2C 67.500; 5C 67.500; 10C 242.000.000; 15C 130,000,000; 4Pta 250,000. The photographs come from Wikimedia Commons and show stamps of this issue; each is credited individually. Identification note: compare the value, colour and perforation together; shades, perforation varieties and later printings are not separated in this entry. Details follow the StampWorld catalogue page; they have not been checked against the issuing postal administration's records.