I am not knowledgeable about buttons. As a category of collectible the best word I can think to describe it is, 'vast'. But I know beautiful when I see it and here are four beautiful, matching amber glass buttons. The backs are lovely and seem to have a gold foil backing. The shanks are steel. One button has a different back from the other three, although the fronts all match. There is light tarnish on the metal parts. ]
I would date these, by seeing the shanks, to the 1920s or early 30s. I have antique buttons and their shanks are different than this--no shiny steel. Anyway--not being a button expert by any stretch, I used that as a means to date them. That, and I've seen coats with similar buttons on them via a couple of Depression era catalogs. Glass buttons have always been a classic for good clothing. The foil backing has a Victorian or Edwardian look to them. The impressions are deep and the amber glass reflects light beautifully. There are 3 cuts on each side of each button. It's a lovely design.
They are 1" square, and there are four of them. The paper doll is a display only. She's not for sale. Thank you for checking in at my shop. Ask questions. I'll be glad to answer as best as I can.
If I love it, I hope you will too.