1935 '15 MILLIEMES' Camel Airmail 10m black & carmine, error opt DOUBLE. Superb fresh MNH, right marginal. SG 68a cat £1000 for M, should be at least double, £2000 MNH. Only 1 sheet of 50 printed & rarity MNH. Certificate can be obtained on request. (P) (Image1)