Overprint type I - top of frame curved at right side. Overprint often placed over two or more stamps due to size, so smaller single stamps may only show part of the overprint. Beware of forgeries. Best collected on piece or on full cover. Expertisation highly recommended. Overprint on Mi: FR 347
Printed in sheet of 50 stamps.
This stamp is a classic error, Henry Cheffer initially mentioned "Discours sur la methode" instead of "Discours de la methode" The postal administration is in and quickly realized the error corrected by editing the same stamp corrected
