First Day Cover
首日封
Sobrescrito de 1.º Dia
ChinaNational Book-Reading Campaign
Date of Issue : 23 April 2016
This set of stamp involves unique printing techniques. The left cover of the book bears the microprint of part of the text from the Three Character Classic surrounding the staircase. The stamp bears "National Book-Reading Campaign" in Braille. Under ultraviolet light, lamplight can be seen from the window in darkness.
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