Set of 3 press frames or photo frames

Beautiful set of 3 press frames to convert into photo frames. I put some old music paper there that you can replace with your own images. They were formerly intended for photo printing. (around 1920). The frame is made of wood with a glass plate. The back is made up of 2 flaps hinged together and held by 2 tabs. They are all three a little different and form a beautiful vintage set. The dimensions are approximately 13x10cm. One of them also has a black metal frame (photo).