When a postal money order was cashed at the post office, the postal agent would attach a 20 Pfennig stamp to show that the 20 Pfennig money order fee had been paid, then cancel the stamp “Avis de Payment” – a French term meaning “Notice of Payment”.

When a postal money order was cashed at the post office, the postal agent would attach a 20 Pfennig stamp to show that the 20 Pfennig money order fee had been paid, then cancel the stamp “Avis de Payment” – a French term meaning “Notice of Payment”.