Air mail state postge stamp

You're referring to the iconic Air Mail stamp!

The Air Mail stamp was a series of postage stamps issued by the United States Postal Service (USPS) in the early 20th century to commemorate the introduction of airmail service. The first Air Mail stamp was issued on May 6, 1918, and it featured a biplane flying over a map of the United States.

The Air Mail stamp was a significant innovation in postal history, as it allowed for faster and more efficient mail delivery across the country. Prior to the introduction of airmail, mail was transported by rail or sea, which could take weeks or even months to reach its destination. The Air Mail service, on the other hand, could deliver mail in a matter of days.

The Air Mail stamp was also a popular collectible item, with many enthusiasts seeking out rare and unique issues. Over the years, the USPS issued numerous Air Mail stamps, each featuring a different design and commemorating a specific aspect of airmail service.

Some notable Air Mail stamps include:

• The 1918 6-cent Air Mail stamp, which featured a biplane flying over a map of the United States.
• The 1925 10-cent Air Mail stamp, which featured a Curtiss JN-4 "Jenny" biplane.
• The 1930 12-cent Air Mail stamp, which featured a Douglas DC-2 airliner.
• The 1935 10-cent Air Mail stamp, which featured a Boeing 247 airliner.

Today, Air Mail stamps are highly sought after by collectors and can fetch significant prices at auction.