Watch List notes:

(x) The 'White Rose' Collection | Byzantine Empire, Constans II (641-668), Solidus, Constantinople, crowned facing busts of Constans and Constantine IV, each wearing chlamys, cross above, rev. victoria avgue, cross potent on three steps, conob in exergue, 4.38g (SB 959; MIB 26), lustrous, about extremely fine.
Provenance,
The "White Rose" Collection of Ancient Coins, formed over several generations between 1914 and 2016,
Estimate: £400 - £500