Watch List notes:

BRITISH COINS, Commonwealth, Silver Pattern Shilling, 1651, milled issue by P Blondeau, English shield within laurel and palm branch, no stops at initial mark sun, THE. COMMONWEALTH. OF. ENGLAND, rev inverted die axis, English and Irish shield, value and pellets above within beaded circle, date above, .GOD. WITH. VS., edge milled, 5.92g (ESC 1002 R3; N 2734, note). A couple of small rim bruises, very fine, toned and rare.
ex Patrick Finn, List 18, 2000, item 328 – his ticket notes ex "Chase Collection"

Estimate: £1800-2200