And on August 25, 1949, a new 6 SkyMaster coil stamp was issued. A new 6 SkyMaster stamp was issued in sheet form on January 18, 1949. One of which sold for $850,000 during an auction in 1998. The 5 Airmail rate was in effect until December 31, 1948, after which it rose to 6. The first airmail stamp - a 24-cent stamp that covered postage from New York to Washington - was issued in May 1918. As only two of these stamps exist, both of them are priced exceptionally high. Airmail stamps pay the postage for the airmail service and were first issued in 1918. The rare Z-grill and horizontal ridges add to the uniqueness of the stamp. Looking for a stamp airmail plane 5 cent Helping to identify your stamps, find out their value and sell them. Just like how the US’s first president plays an integral role in the country’s first few stamps, Benjamin Franklin had stamps featuring his portrait issued in 1868. Helping to identify your stamps, find out their value and sell them. 1c Benjamin Franklin Stamp (1868) (Photo: WikiWand) independence stamp acted as a stepping stone for the other countries to create their own independence stamps. And there was a unique stamp with an inverted center, which was sold for $625,000 in 2018. Like with many incredibly valuable stamps, unique imperfections create extreme value. The two-colored independence stamp carries a face value of 24 cents and has three different variations in split, double grill, or G grill. history by laying down the foundation of global democracy worldwide. The 4th of July, 1776, witnessed one of the most historic days in U.S. The 24c Declaration is a masterpiece in itself as it commemorates the independence of thirteen American colonies from Great Britain.