Watch List notes:

BRITISH COINS, Edward VI, Silver Shilling, 1549, second period (January 1549 - April 1550), Durham House mint, 60 grain weight standard at a reduced fineness of 8oz 2dwt, crowned bust right, bust 1 style, transposed legends, initial mark bow both sides, rev quartered arms upon frame, E to left, R to right, 3.78g (Bispham 3B; N 1923; S 2465C). Light scratches on both sides, weak centre both sides, slightly uneven shape, otherwise fine for issue, toned and very rare.
ex Alfred Bole Collection, Sixpences (Part III), DNW auction, 16 March 2011, lot 1

Estimate: £200-250