I have seen a number of these identical bottles. The answer to their origin can be found here:
https://www.worthpoint.com/worthopedia/antique-wooden-whiskey-decanter-419931735
The example shown has a label which reads, in part: "The "OLD OAKEN BOTTLE" Originated and Perfected by THE LOOKOUT MOUNTAIN WOOD NOVELTY CO., INC. Chattanooga, Tenn. Made of Genuine Tennessee Mountain White Oak- no red oak employed - Sterilized by Flame and Treated by Our Exclusive Process to Bring Out the Mellow Flavor and Aroma of the Wood"
Sure looks like a tourist gift item for visitors to the southern Appalachian mountain area more than a DIY whiskey aging container.