Prince Albert I issue, Monaco, 1891–1894

The Prince Albert I issue is a set of postage stamps released in Monaco in 1891–1894. The StampWorld catalogue lists 16 stamps in the issue (StampWorld numbers 11–11‑21).

Values and colours recorded for the issue: 1C dark olive green; 2C dark purple; 5C blue; 10C brownish red; 15C rose; 25C green; 40C steel blue; 50C dark brown; 50C violet brown; 75C violet brown; 75C purple brown; 1Fr black; 1Fr black; 5Fr deep rose; 5Fr carmine red. Catalogue notes on individual values: (Orange paper); (Yellow paper); (Light yellowish paper); (Greyish yellow paper); Set   (* Stamp not included in this set).

Perforation: 14 x 13½. No watermark is recorded. Design is credited to Louis-Eugène Mouchon. The illustration shows one stamp from the issue, from Wikimedia Commons (Albert I 1891 10c.jpg), matched to the issue by year, country and design and checked by eye. 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.