Designed by Josef Frank in the late 1920s and produced by Thonet, the A 403/F armchair reflects a unique synthesis of early modernist geometry and the Viennese architect’s deeply humanist design philosophy. Unlike the stark functionalism of his contemporaries, Frank’s work introduced warmth, proportion, and subtle playfulness into the modernist vocabulary.
This model — fully restored and bearing the original Thonet label — features a gracefully curved frame while preserving the chair’s original spirit. The result is a piece that feels both timeless and renewed.
Originally intended for progressive domestic and institutional interiors, the A 403/F carries with it the layered cultural history of Central European design between the wars — where craftsmanship met utopian ideals. Today, it offers not just seating, but a quiet expression of form made humane.
A refined accent piece for modernist interiors, historical collections, or cultured reading rooms. A Josef Frank rarity with both visual and archival value.
Designer: Josef Frank
Model: A 403/F
Year: c. early 1930s
Manufacturer: Thonet (labeled)
Materials: Beech frame
Condition: Fully restored. Structural and surface elements expertly renewed. Retains original Thonet label.
Dimensions: width 73 cm, depth 69 cm, height 90 cm, seat height 34 cm
Cushions for the chair can be made upon request, tailored to your preferred fabric by our skilled upholsterer. The cost of this service will depend on your specific requirements and is not included in the listed price.
