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22 Jan 2017 Jahr - US Postal Service issued stamp printed with thermochromic ink

Beschreibung:

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.

Zugefügt zum Band der Zeit:

printing

ByMartin
16 Okt 2017
0
0
1216

Datum:

22 Jan 2017 Jahr
Jetzt
~ 8 years and 9 months ago

Abbildungen:

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