Watch List notes:

Merovingian (c. 700-750), AR Denier, Prototype for Series J, diademed bust right, cross pommée before, rev. latin cross within arched volute, 0.79g, 180° (Abramson, 2008, Fig. 5b; SCBI 69, 1111 this coin; cf. Belfort 5723-31 var.; Prou 2890), irregular flan, toned, good very fine, scarce.
provenance
M Vosper, July 2006
~ Found by M Carlile at Fincham (Norfolk), 2006 ~
[Norfolk HER 40291 = EMC 2006.0195 = BNJ Coin Register 2007, no. 201]
Estimate: £450 - £350