Not sure if this was a practice or game ball, or just a souvenir ball. Bladder holds air. Leather has been conditioned with saddle soap. Here is what AI has to say: The ball in your image appears to be a vintage Wilson NFL "Pete Rozelle" era game-issued or used football specifically for the Iowa Hawkeyes. During the late 20th century, these balls were often stamped with "IOWA" at the factory for use by the university's football program. Similar vintage "NFL" branded balls stamped with "IOWA" have been appraised or sold as authentic college game-issued equipment.
