Thin Blue Line Firefighter's Thin Red Line Challenge Coin 1.75in. Made from a die struck antique-gold plating these challenge coins are made from the highest quality in material. Stand proud to walk the Thin Red Line a Red Line that is needed during this era. Specifications for Thin Blue Line Firefighter's Thin Red Line Challenge Coin: Manufacturer: Thin Blue Line Gender: Unisex Size: 1.75 in Quantity: 1 Features of Thin Blue Line Firefighter's Thin Red Line Challenge Coin Die Struck Antique Plating High-Detail Engraving Package Contents: Thin Blue Line Firefighter's Thin Red Line Challenge Coin Thin Blue Line COIN-TRL-FIRE-FUELED: Firefighter's Thin Red Line Challenge Coin 1.75in