Watch List notes:

Constans II, with Constantine IV, Heraclius, and Tiberius, 641-668. Solidus (Gold, 19 mm, 4.41 g, 7 h), Constantinopolis, 661-663. d N CTIN [...] Facing bust of Constans II, with long beard, on left, wearing plumed helmet and chlamys, and Constantine IV, on right, wearing crown and chlamys; between them, cross. Rev. VICTORIA AVGЧ Θ / CONOB Heraclius, on left, and Tiberius, on right, standing facing and both holding a long cross; between them, cross potent on base and three steps. DOC 30h. MIB 31. SB 964. Struck on a slightly short flan as usual and with minor edge marks, otherwise, extremely fine.