An original, authentic shirt actually manufactured and worn during the specific historic season. These are rare, valuable collector's items. 

Retro Jersey: A newly manufactured or re-released shirt that recreates the look, colors, and design of a historical kit. They are more accessible, wearable, and affordable

Authentics feature heat-pressed, ultra-lightweight silicone crests and seamless bonding to reduce weight and prevent chafing. Replica versions use traditional heavy embroidery and woven patches for durability during machine washing.