This 1925 Avions Voisin C3 Cabriolet Transformable by Rothschild et Fils, Chassis No. 1981, boasts a rich history, having been owned by prominent architect Thomas Markoe Robertson and later restored by David Steinman. It features a 3,969 cc sleeve-valve engine, a luxurious interior with tiger-patterned rear-seat upholstery, and unique details like a wine cooler disguised as a tool chest, making it a prize-winning example of French coachwork.