"Authentic" New Era ORIGINAL 5950 fitted hat, kelly green-gold-white alternating panels, white visor with kelly green undervisor and flip, raised embroidered DOUBLE WHAMMY Celtics "Old School" and "Leprechaun" logos on front and "Hardwood" logo in team colors on back. These are authentic Boston Celtics hats made by New Era for official NBA - National Basketball Association teams.