Thank you for posting the Portugal Madiera stamps, KuoLC...
I now have to obtain same.
Here are a quartet of French stamps issued 6 April 2020 in honor of Félix Nadar (1820-1910), the first aerial photographer in 1858. This was a non-trivial operation at the time. Nadar was using the wet plate collodion process and had to prepare and develop the plates while up in his balloon. He is fairly well-known for that achievement, in part due to a caricature by Daumier which has been featured on a stamp presented earlier in this thread. Less well known, he seems to have been the first person to take photos underground, using artificial lighting, in the Catacombs of Paris.
The mini-sheet employs labels above and below the four stamps. The dozen views are from an innovative 1865 revolving self-portrait. Y&T 5392-5395. Shown here in its original retail packaging which I have not yet opened.
I like the second stamp where he cracks a broad smile. I will have to add that to the mustache thread. The labels could eventually form the bald-spot thread if we ever have one