Production dates, amounts, and estimated surviving examples are given for each mint. Estimates are based on an average 1–5% survival rate of coins of the period due to circulation, clipping, and melting so counts may vary from lists of known examples of specific issues.
In operation from late 1645 to April 1646 when the beseiged castle surrendered. Issues are identified by a "B" mintmark. Original production is estimated at under 1,000 coins with about 12-18 surviving. Issues include Halfcrowns, Shillings, Sixpences, Groats and Threepences.
CAROLVS D G MAG B F ET HI REX EXVRG: DEVS. DISSIPEN: INIMICI |
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| Brooker 1132, N 2523, S 3041. Castle siege. B mintmark. Rare with only 2 examples sold publicly in recent times (2025). | |
CAROLVS D G MAG BR FR ET HIB REX EXVRGAT DEVS DISSIPENIVR INIMICI |
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| Bull 650/3 (D33-2c), Morrieson B-3, Brooker 1123a, N 2516, S 3037. Obverse die used in Oxford, Ashby (A under plume) and now Bridgnorth. Plumelet mintmark. Ex S. Simpson, R. P. V. Brettel, Brian Dawson. | |