Sixth issue, Sovereign, mm. A, back of throne decorated with annulets, pillars decorated with single pellets, reads NRS, 15.40g/3h (Brown/Comber A9; SCBI Schneider 778, same dies; N 2003; S 2529). Very rare.   Ex Walter Wilkinson, ex Christie’s Auction, 10 October 1989, lot 612; bt M. Bord October 1989.  Images courtesy of DNW.