I’ve not been able to determine the make/ model of my third hand. 4.375 jaws, 3 1/4 throat, 4” open. Only mark on it is large #4 on both sides of the movable jaw. Researched the Vintage Vice spreadsheet. Only Athol Starret has a 4.375 jaw width, but it’s not one of those. Looks like original finish was machine grey. If there are any markings under the swivel base they are not accessible as I welded it to well casing decades ago. I beat on this vice every day and it has taken everything w/o complaint.
Any ideas appreciated.

Any ideas appreciated.

