F4U Corsair US Postal Service Stationery Pad (40 sheets) package of 40 sheets of stationery issued by the US Postal Service in 1997 The sheets of stationery have a color reproduction of the USPS 32-cent stamp Text on the stationery says: "An experimental version of the F4U Corsair first flew in May of 1940. It was the first American fighter to exceed 400 mph.