Crossword Genius

Item well-heeled philatelists could bid for when Sotheby's auctioned it for a seven figure sum in 2024 (5,5)

Ross

I believe the answer is:

penny black

(Other definitions for penny black that I've seen before include "when without means to send a letter" , "Today one would be unlikely to lick this" , "World's first adhesive postage stamp, 1840" , "first to get licked" .)

I've seen this clue in The Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.