Watch List notes:

BRITISH COINS, Aethelred II, Silver Penny, Intermediate CRVX type (c.991-997), late transitional type (c.995-997), Winchester mint, moneyer Byrnsige, draped bust left with double fold at front, pellet on forehead, without sceptre, within linear circle, legend commences at top, +ÆĐELRÆD REX ANGLORX, some letters ligatured, outer beaded circle surrounding both sides, rev voided cross within linear circle, letters C R V X in each angle, legend surrounding, +BYRNSIGE MΩO PINT, 1.67g (BMC type IIIa; N 771; S 1150). A few tiny nicks on the reverse, almost extremely fine, toned and extremely rare.
ex Duke of Argyll Collection (died 1949), collection purchased by Spink and Son Ltd, 1949
ex Spink Numismatic Circular, vol CXVI, no.5, October 2008, item HS3568

Estimate: £3000-4000