Dark black plastic buttons with white design. The 4 buttons are part of a "Schoolroom" set of 6... 2 buttons are missing. In very good condition. See photos for your evaluation. Measurement ea. approx. 7/8" dia.ref MA-1 NOTE: I'm happy to combine orders in order to save on shipping. At the end of the auction(s), PLEASE WAIT for the Invoice to be sent to you. International buyers: please email for a shipping quote before bidding on multiple auctions of more than 3 buttons. Thank you!