Case XX Russlock Pocket Worn Mediterranean Blue Bone 51859Case XX Russlock Pocket Worn Mediterranean Blue Bone 51859 American Made Stainless Folding Knife The Case XX Russlock Pocket Worn Mediterranean Blue Bone 51859 is a timeless American folding knife handcrafted in the U. S. A. by W. R. Case & Sons Cutlery Company, proudly manufacturing premium knives since 1889. Measuring approximately 4 1 8 inches closed and weighing just 2. 7 ounces, this Russlock combines heritage craftsmanship with modern