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22 jan 2017 ano - US Postal Service issued stamp printed with thermochromic ink

Descrição:

which responds to changes in temperature as one touches it. The image is a solar eclipse that becomes the moon. It reverts to the original image as it cools.

Adicionado na linha do tempo:

printing

ByMartin
16 out 2017
0
0
1215

Data:

22 jan 2017 ano
Agora
~ 8 years and 9 months ago

Imagens:

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