.31 brass mould for Colt Model 1849 Pocket percussion revolver. Straight leg mould, stamped “COLTS PATENT” without an apostrophe, across both blocks, on the top face. The two cavities are for a round ball nearest the hinge pin and a conical with a heel grease groove below it. The groove helps facilitate loading into the cylinder chamber. The funnel on this model is more shallow compared to later models.