Hi
I've had a number of Vulcans and their variants like the Excel. I'd say $300 would be max if it's a true British made Vulcan and it's in excellent shape with a Beech stock. That's about what you would pay for them new when you could still get them. Realistically I'd expect to pay somewhere around $200. FYI the third variant had a cast trigger which was more curved than previous versions and there were serrations on the trigger. It should also have a safety and a metal rear sight. They are really nice guns for the weight and size. Nothing fancy, kind of like sliced white bread, nothing fancy but it works. Like others have said, they shoot at just under 12ft/lbs. In my mind they don't seem to have a real following for collectors.