Constans II AR Half Miliaresion. 18mm, 2.11 g, Constantinople, AD 669-674. 

d N CONSTANTINUS PP AV, Constans, with long beard, standing 
facing, crowned and wearing chlamys, holding cross on globe 
and mappa.
Cross potent on three steps, palm branch to left and
right. 

Bendall, A New Ceremonial Coin of Constans II, NCirc CXIII.5 (October, 2005), p. 306. Not in DOC, Sear, MIB etc.
Cf. CNG Triton X, 838 and Triton IX, 1634. 

With permission of Roma Numismatics, Oct. 2015