Here is a rare complete set of 12 cards dating back to 1920 from Cailler Chocolates of Switzerland. The cards are paper thin similar to large postage stamps in design and measuring approx 1.5 ins x 2.25 ins with text in French.They are in good condition overall given their age and delicacy and are beautifully illustrated and detailed. They are extremely rare to find in complete sets and in this condition. This set is the Ancient Series XI  . Nestle produced their own sets later in the 1920's based on the same illustrations and I frequently have these for sale , the Peter set is however much harder to find .