Case XX 10725 Hammerhead Lockback withJigged Amber Bone Handle with Leather Sheath. There is nothing like the feel of a Case knife in your hand. Durable, strong and beautifully designed, our hand-crafted Case knives are in a class of their own, which is one reason why they've been passed down from generation to generation, and sought after by collectors from all over the world. For an authentic, American-made work of art, nothing compares to a Case pocket knife, or hunting knife. W.R. Case & Sons Cutlery Co., hand-crafted knives since 1889. Case XX single Blade Hammerhead Lockback with Amber Jigged Bone Handle. Hammerhead etching on blade. Polished Brass bolsters. Lockback design. Leather Sheath 5" closed USA