This pair is from Cassina's first year of production of the famed LC3 Chair (Signed and numbered). They have serial number #590 and #596.They are useable, however the leather is in poor shape and one of them has a tear. Also the foam inside the cushions has seen much better days. Leather pillows can be ordered via Cassina or via a third party company and I would recommend the down filled cushions instead of foam. For the collectors of modern design these early production models are a real find! Please plan on making shipping arrangements.