Pair of De Sede armchairs in leather - 1950s

A pair of very comfortable armchairs, one of which reclines, by the Swiss designers de Sede. They are regarded as the makers of the best quality upholstered furniture in the world. Condition is very good, the chairs have developed a characterful patina over the years and have a lived in look that people look for in leather. At the lower back of one of them, there is a small slit in the leather.