But why only printed imitation or thin coated some creative person thought? Suddenly postcards were “printed” on leather (guess mainly in the USA), on thin, lightweight or even quite solid piece of wood, metal, or card made by peat, plastic and so on. Some creations were not long around, or mailing without envelope was prohibited by postal authorities. A problem was often to transfer the image onto the material. Most designs are quite simple done because of technical limitations, sometimes hand painted.
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