Looks like one of those Korean Hondo dulcimers, under a different name. Not great, but not bad. Worth maybe $50 total -- you can find them for that on Ebay. Better than the rest listed there.
updated by @ken-hulme: 02/18/16 10:40:43PM
Global was, I believe, a Korean company known for their cheap knock-offs of Gibson guitars in the 60s. What you may have found is a pretty good dulcimer. Is it hourglass or teardrop? I've got one of those Korean teardrop knock-offs of the Magic Mountains that sounds really good and plays nice as well.
A pic or url would help us advise. :)