SASANIAN BLACK STONE SEAL WITH DOTTED ZOOMORPHIC MOTIF Ca. 4th - 6th century AD or earlier. A seal or bead carved from black stone, with a dotted design likely representing a schematic animal or astral constellation. Size: 28mm x 27mm; Weight: 23g Provenance: Private London collection; previously in a 1980s Mayfair Family private collection. Studied by PD Dr. habil. Pieter Gert van der Veen, Johannes Gutenberg-Universität Mainz.