11 cent airmail stamp value

A vintage stamp!

The 11-cent airmail stamp you're referring to is likely the 11-cent Airmail stamp issued by the United States Postal Service (USPS) in 1932. This stamp was part of the "Airmail Series" and featured a design of a Curtiss JN-4 "Jenny" biplane.

The Scott Catalogue, a widely used reference for stamp values, lists the 11-cent Airmail stamp (Scott Catalogue #C13) with a value of around $1.50 to $3.00 in mint condition, depending on the condition and centering of the stamp. Used copies of this stamp can be worth significantly less, typically ranging from $0.50 to $1.50.

Please note that the value of a stamp can vary depending on several factors, including its condition, rarity, and demand. If you're interested in selling or appraising your stamp, I recommend consulting with a reputable stamp dealer or appraiser to get a more accurate estimate of its value.