https://trc-images.nl/collection_images/hires/2020/2020.2108a-b.JPG#\\TRC-SERVER\TRCSharedWork\TRC Database\collection%20photographs\2020.2100\2020.2108a-b.JPG#
A pair of square black glass buttons with a design of cording laid in a square pattern. There are glass raised shanks on the reverse of each button..