Watch List notes:

Charles I (1625-1649), Oxford Triple-Unite, 1643, Civil War Issues, Declaration types, tall crowned bust left, holding sword and olive branch over left shoulder, no scarf behind upper arm, rev. Declaration on continuous scroll with three plumes and mark of value above the plumes and above top of the scroll, m.m. plume (Spink 2727; Beresford Jones, dies VI/L5; Brooker 839 this coin; Schneider II, 299; N.2383), a remarkably round and uniformly struck example with only the slightest hint of double-striking to the reverse, otherwise much as struck, extremely fine and very rare, especially in this condition and with an exemplary pedigree through the highly selective cabinets of revered Charles I collectors

provenance
Burford Collection, Heritage NYINC Sale, 7 January 2018, lot 32261
SJA 18, 27 September 2011, lot 63
SJA 12, 5 November 2009, lot 436
Brooker, collection dispersed by Spink from 1978
Farquhar, Glendining, 25 April 1955, lot 25 - 'an extremely fine specimen in mint condition' - £95.0.0 [Spink]
O'Hagan, Sotheby's, 16 December 1907, lot 150 - very fine and rare - £10.0.0 [Spink]
Montagu, Part III, Sotheby's, 13-18 November 1896, lot 471 - 'exceedingly fine and rare in this condition' - £20.0.0 [O'Hagan]
Arthur W. Kirk of Halifax, Yorkshire, Sotheby's, 5 December 1884, lot 82 - 'very fine' - £17.0.0 [Lincoln]