One of the rarest (as configuration) Berthoud De luxe Chronograph late 50's. Stainless steel screw back case, measures 38mm. excluding crown. Black coated round pushers. Amazing black dial (speedmaster 2915 style) with broad arrow minutes hand, S/S tachimeter bezel base 1000. Powered by a Valjoux Cal. 92 (pillar wheel). Overall in very good condition, shows normal signs of wear. All functions in order and keeps a proper time.