Joan Miro, Spanish, 1893 to 1983, a poster for the exhibition at the Orsanmichele Church and Museum in Florence, Italy, in 1979. Joan Miro was a prominent painter, sculptor, and ceramicist known for his Surrealist and abstract works. Exhibition posters are often created to promote and commemorate specific art shows, and they serve as collectible items for art enthusiasts. Vintage Prints And Art Collectibles.