Watch List notes:

(g) The St. Albans Collection of English Gold Coins | NGC MS63 | George III (1760-1820), 'New Coinage', Sovereign, 1820, 'Large Date, Open 2', close colon, laureate head right, rev. St George and Dragon, edge milled, 7.99g, 6h (Marsh 4; MCE 466; Spink 3785C), lustrously choice with much frosted mint bloom, a sumptuous example, practically FDC, with NGC 'St Albans' Certification, conservatively graded MS63 (#6295553-042).
Provenance
'A Distinguished Collection', purchased en bloc via Spink, August 2018,
Baldwin, by private treaty, June 2012
Estimate: £4000 - £5000