Mateo Mirete of Spain began production of these puzzle card sets in 1974 with a 48-card set for player Jose Iribar of Athletic Bilbao. These trading cards were retailed in individual packets usually valued at 5 Pesetas. Sets were to be glued on white pre-printed album page. Upon completion these puzzle card sets were traded for a prize, generally a soccer ball. This is the reason why most – if not all, of these sets have disappeared.