In 1969 Dacosta attended a retrospective of his works from 1939 to 1948 at the Galeria Buchholz in Lisbon and in 1978 his paintings were included in Portuguese Art since 1910 at the Royal Academy of London, a show that he visited with his friend and fellow-artist, Júlio Pomar.
He became one of the forerunners of the surrealistic movement in Portugal. Many of his surrealist paintings were lost in a fire in 1944 in the studio where he was working. The remaining paintings are owned by private collectors or Portuguese museums .Wikipedia
Dacosta is today considered a pioneer of Portuguese surrealist art. In the 1950s, many Portuguese artists, including René Bertholo, travelled to Paris in search of new ideas and Dacosta became a valuable inspiration for them and a source of information about Parisian artistic life.Wikipedia