Joyeux Noel

I bought this Christmas postcard a couple of years ago from a French woman in San Francisco. I wish I could remember just now the name of her shop and will post it here later if I can find it. She and her husband travel to France a couple of times a year and bring back lots of fantastic French ephemera such as old maps, letters, postcards and really cool old garden furniture and the like.
Here is the front and back of the card which has no date. I am going on the assumption it is from the early 20th century.
Sorry it didn't scan very well. There is a silvery metallic haze on it and maybe that has something to do with it.