Over the last century, Poltrona Frau has become known worldwide not only for its au courant furniture but also for the leather it supplies to top automobile marques such as Ferrari, Maserati, and Rolls-Royce. With the new Poltrona Frau Icons collection, the Italian furniture manufacturer is looking back to re-create some of the best pieces from influential designers. The first installment, which launched in October, includes three timeless pieces from the 1950s by the Italian designer Gastone Rinaldi. Using ex…