Lot of three World War II-era U.S. practice bombs, each 8 1/4 in. long by 2 in. dia., two examples being the cast-iron An-Mk23, and the third being the cast-lead Mk 43 Mod 1. The end of each bomb bears four fins, and the model and serial numbers are stamped into the sides. No detonators or dye packets are present. Light oxidation, else very good. These miniature bombs were used by U.S. aviation forces to practice low-level or dive-bombing procedures against land targets. The center of each bomb consists of a hollow cavity, which would have held a specially-designed 10-gauge shotgun shell and a dye marker which would detonate upon impact, allowing observers to determine its accuracy.