https://trc-images.nl/collection_images/hires/2018/2018.2190.JPG#\\TRC-SERVER\TRCSharedWork\TRC Database\collection%20photographs\2018.2100\2018.2190.JPG#
https://trc-images.nl/collection_images/hires/2018/2018.2190_2.JPG#\\TRC-SERVER\TRCSharedWork\TRC Database\collection%20photographs\2018.2100\2018.2190_2.JPG#
Tagua or corozo nut (genus Phytelephas; vegetable ivory)
Round button in mottled brown with a self-shank and threading grove. It has six blocks of lines cut into the front of the button.