Mauritius is the country of origin of 6 of the world's 10 most rare philatelic jewels including the most valuable of them all: the Bordeaux Cover.
Mauritius is the only place in the universe where the most valuable stamps in the world: the unused One Penny Orange Red and the Two Pence Indigo Blue, issued in 1847, can be seen side by side. This stamp issue, the first of any British colony, were designed and printed in Mauritius. They were mostly used on the invitation to the legendary ball given by the governor's wife, Lady Gomm. The ball was held in the two-storey timber building now fronting Government House in Port Louis.