Some of my vise finds from the past few weeks. Parker 974, was frozen everywhere, someone broke the collar screw trying to force it open, got everything freed up today, just need to get the broken screw out. Wilton 4" Shop king, with pipe jaws, 4" Prentiss swivel jaw swivel base, 3" Reed, 3-1/2" Craftsman, made in USA, 4" Athol, and a 3" clamp on, sadly the clamp has been welded, seems solid, would make a great candidate for a Rev. Scott type swivel base conversion.
Kind of funny story about the Prentiss, found it at a swap meet. Noticed the screw didn't pull the jaw open, didn't even flip it over to look, but figured I'd use it to negotiate the price down a little. when I mentioned it to the seller he replied "All the old vises are like that, you have to pull the jaw out to open it." Okayyyy, didn't call him on his BS since it was priced significantly lower than market value, just chuckled to myself and bought it. It's pretty minty, real nice jaws, other than a loose collar screw

and it needs a swivel jaw lock pin, had a 4" long piece of rod stuffed in the hole. Has a different swivel base lock plunger lifter I haven't seen before.