A small advertisement in the daily Parisian newspaper, Ce Soir (formerly Paris-Soir), dated October 2, 1945 shows Alex Singer was marketing both singles and tandems made by builders named “Billiet,” “Routters” and “Czukaa.” In 1946 his atelier produced a single bike weighing but 6.875 kg, or 15lbs, and also offered a production (non-custom) tandem weighing a feathery 15.94 kg, or just 35 lbs.