I found a whole stack of these large capital Ms the other day, one for each major holiday:
They say Dorothy Ernst on the back, but no date. In the context of the other stuff in this box (which I will get to later on) it has led me to the realization that Gramma had a great visual eye! I had always thought of her as being much more musical and verbal, but there's lots of stuff in here thats quite sophisticated visually.
Oh my gosh! Those are fantastic, they would make a great statement displayed in a grouping. Yes, she was fairly artistic. She was ahead of her time in her room decor.