Take a look at several recent threads on Shotgunworld re refinishing and refreshing lower end or well used quality Spanish guns. There is a bit of a cottage industry in nicely refreshed Spanish guns that cost $300-$500 before the refreshing, and those guys can give you good advice.
http://www.shotgunworld.com/bbs/viewforum.phpThanks, I hadn't been there before. Looks like lots of guys are messing around with these older Spanish doubles.
Caleb,
For the stock, you can strip it yourself (protect the checkering!) and sand out some of the ugly shape in it as you go. Follow traditional oil stock refinishing methods and you'll get a great finish. You may even want to paint on some false grain as you go (people on this forum can explain how) and then oil finish over the top.
Thanks for the advice. Two questions, though...
1) What do you mean by "protect the checkering"? Do you mean just don't sand it, or would I need to do something to it while soaking the stock?
2) I might give the faux grain thing a shot. Like you said, I don't have much into this and it's picnic table wood right now. Does anyone have any techniques to recommend? Is it actually paint, a small torch, or something else? Kind of amazing what can be done:
http://www.larsongunart.com/