tool, saint_nicholas, seal, byzantine, numismatic, security
This is a tool used for sealing. A small disk would be sandwiched in and then hammered to imprint an image (this particular boulloterion has St. Nicholas). Seals were used to legitimize official documents.
21.4 cm (8 7/16 in.)
Janice Jia, “Boulloterion,” CB 51 Gallery, accessed September 28, 2021, https://gallerytest.omeka.net/items/show/191.