Original Model 1841 rifle and Model Model 1842 Harper’s Ferry Cone (Nipple) Wrench in near mint condition. The US marking is clear. This was manufactured at Harper’s Ferry because it has the US marking. It would be difficult to find one in better condition. This will also work on Original Model 1855- 1864 Muskets as well as many Civil War carbines. It is stronger than the open ended Model 1863 wrench. This is great item for any Civil war collector.