VTG Estate Pipe KBB Yello-Bole Imperial Imported Briar Stummel ONLY 1950s

VTG Estate Pipe KBB Yello-Bole Imperial Imported Briar Stummel ONLY. Round Shank, Rhodesian style 1950s? For parts. Made in USA Pipe has interesting carving on it that looks like it was done after manufacture, I'm not sure. Diameter of Chamber opening: 20mm Largest diameter of Bowl: 35mm approximately Overall length of Bowl and Stem: approximately 70mm Inside Diameter of Mortise: 8mm (I did this with a ruler, no calipers) Outside Diameter of Mortise: approximately 15mm Overall Height: 42mm