Original ~20mm leather buttons (lederstoffknopf) on card. The box is D.R.Patent (Deutsches Reichspatent) marked and each button is marked D.R.G.M. (Deutsches Reichsgebrauchsmuster) on the back. The eagle at the top of the card says Gesetzlich Eingetragen (legally registered). The buttons are a dark brown (almost black) color.
These are new old stock. It does have some storage wear and some of the buttons have rust. Price is for the full card of 24 buttons. Main box not included.