Check the listing for details. Minor League Mini Helmet Trenton Thunder. Condition: New. Listed at 9.99 USD. Show your team spirit with this mini helmet from Trenton Thunder, perfect for any baseball fan. Made from high-quality materials, this helmet is a must-have for collectors. It features the iconic Trenton Thunder team logo and colors, making it a great addition to any fan's collection. This mini helmet is perfect for displaying on a shelf or desk, or even for wearing while playing your own games. It is a great way to show your support for your favorite team without having to worry about the condition of the item. Get yours today and add it to your collection!