This leaflet clearly dates from shortly after the 1939 version?, but it is unclear exactly when it was issued. I have guessed at 1945, because, unlike much of the French bicycle industry, Cyclo's business was badly disrupted by the Second World War. Albert Raimond, the owner and leading light of Cyclo, was an enthusiastic supporter of the French Resistance and was imprisoned and beaten up by the Gestapo.
Unlike the 1939 leaflet?, the derailleur range does not include the 2 speed model. However it does feature the lightweight tension pulley wheels that were introduced in 1939.