Watch List notes:

Charles I (1625-49), "crown" gold Unite of Twenty Shillings, Tower Mint, group B, second crowned bust left, class Ia/1b, bust 2a, value XX in field behind, Latin legend and beaded border surrounding, initial mark castle (1627-28) both sides, .CAROLVS. D; G; MAG; BR; FR; ET. HIB; REX., rev. crowned quartered shield of arms, legend and beaded border surrounding, .FLORENT CONCORDIA REGNA., only stops at start and end of legend, weight 9.02g (Brooker 39/38; cf.Schneider 123; N.2148; S.2687). Lightly toned, well centred, just a tad weak of strike on base of bust and corresponding part of reverse, a bold very fine.

The original pyx trial records show that £234,915 of 22 carat crown gold was struck for this mint mark from 1st April 1627 until 31st March 1628.