Birth Centenary of Heinrich Hertz, Physicist 10pf Light green & black
                                    - Country Germany
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                  Denomination
                  ?10pfFace value of a stamp, usually printed on the stamps.β Glossary
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                  Color
                  ?Light green & blackOriginal catalog color of the stamp.
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                  Print method
                  ?LithographedMethod of process of imprinting designs on paper.
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                  Perforation
                  ?14Holes punched between stamps to make separating easier.
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                  Watermark
                  ?DBP and Rosettes MultipleA 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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