Constantine club chair from Blackbarn Bronze Age collection by Mark Zeff, bronze finished frame with fabric upholstery.Bronze Age collection by Mark ZeffBronze Age is a furniture collection designed by Mark Zeff. Zeff takes inspiration from his favorite designers from Art Deco and 1940s French Modernism, using bronze as the main material to form the foundation of this collection. The pieces are handsome and masculine, handcrafted in USA by the finest craftsmen using exquisite leathers.