Heralded recently as the last revolutionary movement of the first half of the XX century, Cuban Concrete Art accompanied the incipient and later ebullient social revolution of Cuba during the 1950’s witnessing and evidencing the changes in the spirit of a nation in search for a cultural identity beyond their insular confines. Their art not only found a local promising receoption but was at the times the most traveled and exhibited movement from Latin America into Europe and the United States.  Influenced by the artistic diaspora of the 1940’s from Europe into Latin America and later by those members that had the privilege of traveling to Europe in the post war, Cuban Concretism emerged from the philosophies and aesthetics of both, the European Neo-Platicism, Constructivism, and Suprematism, and in more direct way, from the Argentinean MADI and Concrete movements. Few works remain from the period, and works on paper are the most difficult to find given the lack of interest on the movement by successive generations that favored the social realism championed by the revolution. More so, conditions of humidity and lack of proper storage led to lost of most works on paper. Fortunately  some of those works survived and over the last years we have gathered a number of important and iconic works by the 'Grupo de los 10' which we present along with period/vintage documents that makes this findings the most relevant to date.