The Great Waltz

I found this lovely vintage poster at the thrift store today. I have not gone thifting in ages. I just love the illustration and the coloring really matches my apartment. I sort of hate the label someone put under it that says "M.G.M The Great Waltz 1938." I decided to type it in to my computer and the posters for this movie don't look anything like this image. I wonder if this is even for that movie or not. Is this a famous illustration that I just am not recognizing? Now I'm just curious on what this is exactly. Whatever it is I very much like it.