French. Early twentieth century. This is a celluloid card. A wonderful 3-D collage, which was a very popular genre of postcard in the first two decades of the twentieth century. April First was responsible for possibly the largest number of cards...maybe even more than Christmas. You can read online the history of this and the significance of the fish, which here is a wonderful blue foil. Note the lovely addition of ribbon. Small bits of wear from its great age, but much better than one would expect, really fantastic. There is still an echo of the Victorian sensibility here. Art historians focus on the explosion of surreal collages in the Dadaist art movement, but it was going on in the postcard world even before that. Those European artists surely saw these cards. It's so much fun to decorate with antique postcards. You have an instant art gallery. And it's very inexpensive to frame them attractively.