US Stamps issued 1943-44 depicting countries then-occupied by Axis powers. (Scott 909-921)
from /r/vexillology Top comment: I appreciate how each individual flag had the time put into it to look realistic, with subtle variations in wrinkles and shading, as opposed to simply putting a flat design of the country's flag. Also note how the Korean flag is out of date for the era that the stamp was issued.














