Watch List notes:

BRITISH COINS, Philip and Mary (1554-1558), Silver Shilling, undated, profile busts facing each other, crown above, full titles, rev crowned quartered shield of arms, value above, 5.57g (N 1967; S 2498). Good very fine for this often weakly struck issue, pleasing portraits and attractive light tone.
from the David Sellwood collection

Estimate: £2500-3000