British Guiana stamp could fetch $20m, says Southeby's

The 1856 one-cent Magenta, regarded by collectors as the world's most famous rare stamp, might sell for up to $20m (£12m; 15m euros), Southeby's says. The unique stamp has set a world record each of the three times it has been sold at auction. via Pocket http://ift.tt/1gE1t5L