Watch List notes:

Philippines, Culion Leper Colony (1906-30), second issue, 20-Centavos, Manila, 'Bureau of Health' issues, in aluminium, 1920 (KM 12); in cupro-nickel, 1922, with countermark (8); the first somewhat corroded as expected, the rest generally good fine to good very fine, all scarce, an unusual offering (9).

Estimate: £60 - £100