The Eames PSC-4 Chair, part of the fiberglass series, has a unique design and appearance due to the factory-made duo of attached cushion and lumber support. This unusual addition added a new level of comfort, especially for the purpose of using the chair for work, whereby it could potentially be used for longer hours. The acronym PSC stands for Pivot (P) side chair (S) on Cast Alu Base (C). Overall super comfortable and classic swivel chair. Bottom has embossed herman miller "M" stamp and printed zenith prime stamp Pickup or delivery is possible within Colorado and New Mexico, please message to arrange