The 2019 Case XX Tony Bose 6.5 Bone Stag Sowbelly (Pattern TB6.5339 SS, Product SKU 65313) is a highly collectible, heavy-duty pocket knife. Designed in collaboration with legendary custom slipjoint maker Tony Bose, this specific model features Case's "6.5 Bone Stag" handles and Tru-Sharp surgical stainless steel blades.
Specifications & Features
• Pattern Number: TB6.5339 SS
• Handle Material: Genuine 6.5 Bone Stag. Case crafts these handles from natural bone using a special jigging and hand-flaming process to mimic the exact honey, amber, and textured feel of authentic stag antler.
• Blade Steel: SS (Tru-Sharp Surgical Stainless Steel) with a mirror-polished finish.
• Blade Configuration: 3-blade stockman-style layout featuring a primary Clip Point blade (with Tony Bose's signature false swedge) alongside secondary Sheepfoot and Spey blades.
• Dimensions & Hardware: Measures 3.88 inches closed, featuring nickel silver bolsters, an oval Case XX inlay shield, and specialized recessed blade housing to prevent internal blade rubbing.
Collectors Note & Tang Stamp
Because the handle is structurally bone but aesthetic stag, Case designated it with the hybrid "6.5" prefix. The 2019 production year can be verified on the primary blade's tang stamp, which displays the "Case XX" logo flanked by two dots above and three dots below.

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