Reminds me of this wonderful stamp on a similar theme — the 2017 solar eclipse stamp. Initially showing the eclipse, the image on the stamp changed to show the

Reminds me of this wonderful stamp on a similar theme — the 2017 solar eclipse stamp. Initially showing the eclipse, the image on the stamp changed to show the moon when you warmed it with your finger. Was pleasantly surprised to see something fun and interesting coming out of an institution that I thought no longer innovates. https://en.m.wikipedia.org/wiki/2017_Total_Solar_Eclipse_stamp https://en.m.wikipedia.org/wiki/2017_Total_Solar_Eclipse_sta...