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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:

16 Okt 2017

Datum:

22 Jan 2017 Jahr
Jetzt
~ 7 years and 4 months ago

Abbildungen: