Stamped 400, 401 & 402. If you have questions or would like further pictures please ask. The item "Vintage HUGE Yost Woodworking Under Mount Work Bench Vise Cast Iron Industrial" is in sale since Wednesday, May 8, 2019. This item is in the category "Collectibles\Tools, Hardware & Locks\Tools\Carpentry, Woodworking\Vises, Clamps".The seller is "bigdaddymoon2" and is located in Litchfield, Michigan. This item can be shipped to United States.