Description:  This Set of (12) 1920's Poster Stamps is for "Nestle Chocolats" "Churches & Convents"  The stamps are from France and written in French. 

"The poster stamp was an advertising label, a little larger than most postage stamps, that originated in the mid-19th century and quickly became a collecting craze, growing in popularity until World War I and then declining by World War II until they were almost forgotten.

Each Stamp Measures: 1-5/8" W x 2-1/4" H.