Parker vice

[Big D]

Tough question. Sorta like saying "What's a Chevy worth?". There were about a bazillion different Parker vices made. Folks a lot more knowledgeable than me can give you a rough estimate if you can post pictures and/or a description, including model number

[Bill Murphy]

ebay has a bag of them for sale. See if you can see your vise there.

[Danny McHugh]

I went on Ebay and there are plenty of parker vices with a big spread in prices. I wish the shotguns were that cheap!