This armchair is the derivation of a model designed by Frank for Madame Cerf’s apartment. Although armchairs with arched back were widespread in the 1930s, Frank’s version stands out for the arch laid in the centre of the armrest and not embracing the whole rear of the chair, and for the shape of the armrests, neither inclined nor tapered. The sofa is a two-seat derivation of the armchair.