Watch List notes:

BRITISH COINS, Edward VI, Silver Shilling, Third Period, Fine Silver issue, facing crowned bust of king, rose to left, value to right, within linear and beaded circles, initial mark y (1551) both sides, rev long cross fourchée over quartered shield of arms, 6.24g (N 1937; S 2482). Flan almost fully round, otherwise very fine, lightly toned.
from the David Sellwood collection

Estimate: £400-500