Citroen C4G MFP / C6G MFP / Rosalie 'moteur flottant' hub cap. very beautiful original condition (probably NOS). fix diameter 170mm (a little bigger than the common Rosalie hubcap)
This is the first edition of a well-known publication by the well-known French automotive author/journalist Baudry de Saunier.
On about 400 pages he treats all aspects of cars and motoring. There is even a dictionary with translations into English and German.
Among these pages one finds several interesting ads: G. Richard, Eldin ..