I have a collection of Westerly, Corona, Tacoma and New Hartford Guilds. All kept because each produces a great and different sound. I will enjoy them and hand them down to my kids and they will make a bunch of money on them. I think Guild cannibalized themselves with their Chinese offerings. Although there are many great post Westerly guitars, it will be a while before they gain traction as collectibles for their sound. There is a definite dumping of collectibles in many fields as the economy takes its toll on baby boomers. I see it everywhere. Buy your great American Guilds, enjoy them and hang on. There is no chance Chinese or Mexican guitars can match the quality of American Made Guilds. Not ever ! The biggest mistake I ever made (in this field of collecting) was not buying a '62 Vette for 23K 30 years ago. I would have driven it and have a car worth 55K. Have patience. Look forward.
Phil D