Watch List notes:

Commonwealth (1649-1660), Shilling, 1651, no stops on obverse, 5.97g, 12h, m.m. sun [on obv. only] (ESC 84; North 2724; Spink 3217), lightly toned on a full flan, almost very fine for issue.
Provenance
Spink, by private treaty, 12 November 1976 - extremely fine and scarce - £170
Estimate: £350 - £450