The Made in Italy stamp is under the rubber handle and never seen. The blade material is 425M Stainless. Overall length is 14.75" and the blade is 9.5" and 5/16 thick!! These are very well made knives and very collectible.
Last pic shows a piece of parchment paper under the snap on the sheath to prevent marking the hypalon handle. The item "VINTAGE GERBER USA COFFIN HANDLE AUSTRALIAN BOWIE KNIFE model 5978 14.75OAL EXC" is in sale since Thursday, July 23, 2020. This item is in the category "Collectibles\Knives, Swords & Blades\Collectible Fixed Blade Knives\Modern Fixed Blade\Factory Manufactured". The seller is "coyote521" and is located in Albuquerque, New Mexico. This item can be shipped to United States.