Office chair by Robin and Lucienne Day for Castelli, Italy 1970s

Office chair by Robin and Lucienne Day for Castelli under Hille license, Italy 1970s. Cast aluminum base equipped with four casters, black lacquered metal piston allowing three seating positions topped with an off-white lacquered metal plate on which Attached is an off-white plastic shell. Each case is covered with a black fabric cover in very good condition. Very good condition with traces of use (chair backs). Chair dimensions: H 81 W 48 D 50. Possible seat heights: 45, 47, 49cm.