people wonder how and why chromos were used

We know that they were used as tickets; with border inscriptions for a chair, fauteuil (szz phot under ) in a park or entrance to a festiviy

So the chromos were just given away to clients, with a hidden agenda. They could use them for that purpose and later put them in their "foto-albums" for nostalgic reasons

Clever businessmen however collected the chromos again to use them again or just for second-buying options

This card had to be kept by the buyer and he had to do 25 new orders ( the cards were the proof, like in the 1920's posterstamps and client-stamps were in the "regular-client-glue-them-in-booklets" ).

When having fulfilled that mission, then you could collect a "cadeau" : one liter of wine or licor … in this particular case

Here the text is on the left : PRIME AU CHOIX -translation : get your price, be rewarded !