Obverse: CAROLVS · D : G · ANG · SCO · FRAN · ET · HIB · REX · FIDEI · DEF ; around crowned square topped arms within the collar of the Thistle, all surrounded by the garter.
Reverse: * REGIT * VNVS * VIROQVE ; around lis-tipped scepter and trident crossed in saltire, · 1628 · in exergue.
By Nicholas Briot.
Pitted with stable green deposit.
Composition AE. Weight: 5.6 grams. Diameter: 28.4mm.
M.I. 250/27. North 2676. Brooker 1260 (silver), same obverse die.

Sometimes considered a pattern for a shilling, beause the reverse design and legend is shared with the pattern halfgroat by Briot of the same period.

Usually silver, very Rare in AE.