The value is not in the stamps, but rather the postal history of the entire mail pieces. The top and bottom covers are postmarked May 19, 1938 and have local cachets for the National Air Mail Week celebration. They are collector-made souvenir covers and typically go for $2-6 each on
ebay depending on the town. The Rockford cover has a very attractive airmail border.
The middle cover is an uncacheted first day cover, with considerable toning, so little value as a collectible.
Posted 05/31/2021 1:39 pm
