Watch List notes:

Charles I Sixpence, Second Milled Issue 1638-1639, Briot's Mint, mm anchor to both sides, obv. CAROLVS•D•G•MAG•BRIT•FR•ET•HIB•REX•, Briot's late bust, VI to right side of field, rev. CHRISTO•AUSPICE•REGNO•, square-topped shield over long cross fourchée to inner beaded circle, S.2860, adjustment marks to reverse and minor rim imperfections, otherwise AVF.
(Estimate: 100 - 150 GBP)