Watch List notes:

Commonwealth (1649-60), Halfcrown, 15.02g, 1651, m.m. sun, shield of England within palm and laurel wreath, rev. conjoined shields of England and Ireland, mark of value above, no central stop (ESC 17 {426} [R2], this coin; N.2722; S.3215), scratch by date, weak in areas, good very fine, rare.
Provenance:
St. James auction 10, 6-7 November 2008, lot 474, £620
Patrick Finn, list 14, September 1998, no. 331 - "Apart from an 'old dig' to the right of the date, as struck and virtually EF and extremely rare, £750"
Estimate: £1,000.00 - £1,200.00