Watch List notes:

(x) NGC XF45 | Charles I (1625-1649), Group IV, Type 4, Crown, 1645-1646, Tower (under Parliament), (m.m.) CAROLVS • D.' G.' MAG.' BRI.' FRA.' ET • HIB.' REX, fourth foreshortened horseman left, sword upright, no ground line, rev. •:• (m.m.) •:• CHRISTO • AVSPICE • REGNO, oval garnished shield, 29.84g, 8h, m.m. sun / sun (Hawkins 4; Francis 42; FRC XXIV/XXXVIII, lot 97; Brooker 273; Barr 199; North 2198; Spink 2761), some overt metal stressing across obverse field, otherwise handsome uniform tone, very fine or better, the peripheries pleasingly bold, the same obverse die as last, in oversize NGC holder, graded XF45 (Cert. #4909919-001).
Provenance
Sovereign Rarities, by private treaty - 29.88g - £6,500
SNC, July 1998, no. 4592 - a few slight flaws, toned, almost EF - £1,300
, ,
https://www.ngccoin.com/certlookup/4909919-001/45/
Estimate: £5000 - £7000