Charles I, Tower mint under King, shilling AD 1638-9:
Obv: mm anchor .CAROLVS.D:G:MA:BR:FR:ET.HI:REX. (Charles by the grace of God King of Great Britain France and Ireland) Group E,fifth bust, type 4.1 var., larger bust, single-arched crown, large XII.
Rev: mm anchor .CHRISTO.AVSPICE.REGNO. (I reign under the auspices of Christ) Square-topped shield over cross moline.
Weight: 6 grams