Watch List notes:

Kings of Syria, Tryphon (usurper, 142-138 BC), tetradrachm, Antioch, diademed head right, rev., ΒΑΣΙΛΕΩΣ ΤΡΥΦΩΝΟΣ ΑΥΤΟΚΡΑΤΟΡΟΣ, spiked Macedonian helmet ornamented with ibex-horn; below, two monograms; all within oak-wreath, 16.64g, die axis 12.00 (SC 2031.3d; SMA 261-264 var.), some edge marks, about extremely fine and rare [Ex St. Mary's College, Oscott]. Provenance: Spink Numismatic Circular, February 1993, 22
(4000-6000 GBP)