50th Anniversary of Human Space Flight
On 12 April 2011, the United Nations Postal Administration (UNPA) will issue three stamps in the denominations of US$ 0.44, CHF 0.50 and € 0.35 in a mini-sheet format of sixteen stamps to commemorate the 50 th Anniversary of Human Space Flight. UNPA is also issuing one souvenir sheet with six different denominations, two from each office. The denominations are US$ 0.44, US$ 0.98, CHF 0.85, CHF 1.00, € 0.55 and € 0.65. This is the first time ever that UNPA has issued a souvenir sheet in this format.