Watch List notes:

Leo III the "Isaurian", with Constantine V, 717-741. Hexagram (Silver, 20 mm, 3.27 g, 6 h), ceremonial issue, struck as a donative from solidus dies, Constantinople, March 720-721. d NO LEO-N P A MЧL • Crowned and bearded bust of Leo facing, holding cross on globe in his right hand and akakia with his left. Rev. d N CONST-ANTINЧS M Crowned bust of Constantine facing, his ears uncovered, holding cross on globe in his right hand and akakia with his left. Cf. DOC 3 (but unknown in silver). Cf. Füeg 3 (but unknown in silver). SB -. (Of great rarity, probably unpublished). Clear and well-struck. Minor scratches and marks, otherwise, about extremely fine.