This retro hat design was worn by the Braves in the 70s and early 80s right after Ted Turner bought the team. Word is he changed the scheme to be more patriotic and he started broadcasting games on his network with the end goal to makes the Braves “America’s Team”. He somewhat succeeded since there are many Braves fans around the country that are not from the Georgia are. This hat is made by 47 brand and is still available. It is a fitted/large and 100% cotton.
https://www.lids.com/atlanta-braves-47-mlb-47-franchise-cap/20461604