SEMI-POSTAL - Maurice de Broglie (1875-1960), physicist, and X-ray spectrograph 40c + 10c Dark gray
                                    - Country France
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                  Denomination
                  ?40c + 10cFace value of a stamp, usually printed on the stamps.— Glossary
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                  Color
                  ?Dark grayOriginal catalog color of the stamp.
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                  Print method
                  ?EngravedMethod of process of imprinting designs on paper.
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                  Perforation
                  ?13Holes punched between stamps to make separating easier.
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                  Watermark
                  ?UnwatermarkedA pattern embedded in a paper during stamp producing process.
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                    Issue Date
                    ?Date inscripted on a stamp or cancellation for used stamps not necessary correspond to real date of stamp issue.
                  
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                    #
                    ?Catalog number of stamp.
                  
                 
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Same series stamps
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SEMI-POSTAL - Philibert Delorme, Architect, and Chateau d’Ane
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SEMI-POSTAL - Louis Le Vau (1612-1670), architect, and Vaux-le-Vicomte Chateau, Paris
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SEMI-POSTAL - Prosper Merimée (1803-1870), writer, and Carmen
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SEMI-POSTAL - Alexandre Dumas (1802-1870), writer, and Three Musketeers
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SEMI-POSTAL - Edouard Branly (1844-1940), physicist, electric circuit and convent of the Carmes, Paris