Watch List notes:

United Kingdom, Edward VII, bronze farthings (3), 1902, 1903, 1906, with dark finish, bare head r., by de Saulles, rev. Britannia seated r., with trident and shield (S.3991), 1902 certified and graded by PCGS as Mint State 64; others by NGC, both as Mint State 64 Brown and Blackened (3)
Since the introduction of the veiled head coinage of Queen Victoria, farthings had been given a dark patination to avoid confusion with the gold half-sovereign.
(40-50 GBP)