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The first postal stamp of Uruguay
On October 1, 1856, the first Uruguayan postage stamp appeared, known as "Diligencia". It owes its name to the fact that these stamps were used to frank the correspondence that was transported by that means.
I am picturing a design that could be more minimalistic but still recognizable.
Learn more about it here:
https://www.correo.com.uy/primer-sello-uruguay#:~:text=El%201%C2%BA%20de%20octubre%20de,era%20transportada%20por%20ese%20medio.