How cool is the tree illustration on this Hungarian stamp from 1975. The red and green print works really well against the neutral background and I love it when the overprint is visible.
I think the illustrator is Olah Gyorgy (bottom right on the stamp), although all I can find out about him was that he was a Hungarian, Nobel-prize winning Chemist - so maybe he isn't the illustrator??
See more of my favourite stamps here