Scotland, Charles I 1630 Six Shillings mm. thistle, extremely rare date

Scotland, Charles I (1625-49), silver Six Shillings, first coinage, 1630, crowned bust of his Father James VI right within beaded circle, value VI behind head, legend commences at top, initial mark thistle head both sides, CAROLVS. D. G. MAG. BRIT. FRAN. &. HIB. REX., rev. quartered shield of arms, Scottish arms in both first and fourth quarters, date 1630 above, inner beaded circle legend and outer beaded circle surrounding both sides, legend commences upper right, QVÆ. DEVS. CONIVNXIT. NEMO. SEPARET, weight 2.26g (SCBI Scotland 70:159; Burns 4, fig.999; S.5543). Uneven tone, weak at centre both sides though with a clear date and extremely rare, the example in the National Museum of Scotland has a weak date and in comparable condition.