Game worn used High Desert Mavericks batting helmet. Unknown which Seattle Mariners or Texas Rangers prospect wore this in games. The helmet is missing the padfing on one ear flap, obviously taped on while in use as tape still on inside of helmet. The Mavericks were part of the California League from 1988 to 2016. They were affiliated with the San Diego Padres, Florida Marlins, Baltimore Orioles, Arizona Diamondbacks, Milwaukee Brewers, Kansas City Royals, Seattle Mariners, and Texas Rangers. They won 4 California League Championships 1991, 1993, 1997, and finally in 2016, the last year in existence.