31 Caliber 1849 Brass Pocket Bullet Mold. This is a Civil War Era 1849 Colts Patent. 31 Caliber Brass Bullet Mold. The mold is stamped Colts Patent on the front and measures 4-3/4 Long x 7/8 Wide.The mold is in overall untouched condition. The cavities are in very good condition and the mold closes tight and works smoothly. The item "Civil War Era Colts. 31 Caliber 1849 Brass Pocket Bullet Mold" is in sale since Friday, January 10, 2020. This item is in the category "Collectibles\Militaria\Civil War (1861-65)\Original Period Items\Other Civil War Original Items". The seller is "captainxo" and is located in Malverne, New York. This item can be shipped worldwide.