To commemorate Sancal’s anniversary, Isaac Piñeiro proposed the concept of designing four chairs, one for each of Sancal’s decades. Instead of four totally different chairs, Nadadora decided that the project would make even more sense if each chair shared the same structure. This way the difference lies in the backs; each one inspired by a key moment in the history of furniture design. The ’20s back symbolises concepts drawn from the work of Marcel Breuer and his Cesca chair. The ’30s back is a nod to Scandinavian design, in particular, the 69 chair by Alvar Aalto. The ’40s variant represents the organic design of the ’40s, ’50s and ’60s and celebrates the LCW chairs designed by Charles Eames. Postmodern influences are impregnated in the ’70s, inspired by designs like those of Synthesis 45 by Ettore Sottssas for Olivetti.