GREEK HELLENISTIC STAMP SEAL WITH HORSE. Ca. 3rd century BC - 3rd century AD. A stamp seal, possibly quartz, depicting a horse lying on its back. Size: 15mm x 18mm; Weight: 3.10g Provenance: Private UK collection; Ex. European collection formed in France in the 1960s to 1980s; Ex. Bachmann collection. This item has been cleared against the Art Loss Register database and comes with a confirmation letter.