You are looking at a Super Rare Rock Island Automatic No. This vise weighs about 37 lbs. Vise was repainted by me, two very light coats of satin epoxy. The cylindrical nut in the base clamps with the cylindrical base when the handle is tightened to lock swivel motion, thereby earning the name "Automatic". You won't be seeing another of these for a while.
The item "SUPER RARE Rock Island Automatic Vise No. 4, Swivel Base 3-1/2 Jaw Vise" is in sale since Wednesday, August 19, 2020. This item is in the category "Home & Garden\Tools & Workshop Equipment\Hand Tools\Clamps & Vises". The seller is "ed-dixon" and is located in Alexandria, Virginia.
This item can be shipped to United States.