Nolan Arenado Autographed St Louis Cardinals Signed Baseball Batting Mini Helmet JSA COA is a must-have collectible for baseball fans and memorabilia enthusiasts. Featuring Arenados authenticated signature verified by JSA COA this mini helmet celebrates his incredible talent and contributions to the game. Perfect for display it is a standout piece that showcases Arenados impact as a key player for the St Louis Cardinals. Add this exceptional item to your collection today. This is one of those helmets that goes on top of a roating display.