Watch List notes:

THE COLLECTION OF A CLASSICIST (PART 2), BRITISH COINS, SCOTLAND, Charles I, Silver Pattern Threepence, by Nicholas Briot, crowned bust left within linear circle, lozenge stop at top, CAR.D G MAG. BRIT.FR. ET HIB. R, rev inverted die axis, thistle within linear circle, lozenge at top, NEMO. ME. IMPVNE.LACESSIT, 0.83g (S 5603A). Abrasion on reverse at top, otherwise very fine, unevenly toned, extremely rare.

Estimate: £300-400