Watch List notes:

The Byzantine Empire

Constans II, September 641 – 15 July 678, with colleagues from 654. Solidus 654-659, AV 4.45 g. Facing busts of Constans on l. and Constantine IV on r., each wearing crown surmounted by cross and chlamys; between them, cross. Rev. Cross potent on three steps. DO 27d. MIBE 27. Sear 961.
Extremely fine
Ex Busso Peus sale 399, 2009, 480.