Watch List notes:

Merovingian (c. 700-750), AR Denier, Prototype for Series J, modelled diademed bust right, with coiled serpent before, rev. bifurcated cross within arched volute, 0.90g, 30° (Abramson, 2008, Fig. 5a; 2012a, Fig 3; SCBI 69, 1110 this coin; cf. Metcalf 267; cf. Belfort 5723-31 var; Prou 2890), very fine, scarce.
provenance
S Adam, February 2005
~ Found at Dry Doddington (Lincolnshire), 2002 ~
[EMC 2002.0273]
Estimate: £400 - £300