Hi, I have a question. I own a melody plus guitar circa late sixties. I've never heard of the brand before, I believe it is the predecessor of Yamaha, but I cant find anything about the brand. It is a Melody Plus Superb X38. If anyone knows anything about this guitar that would be sweet.
Sounds like an Argos cheapo guitar.. No offense.

Basically, if you can't find any info.. Then there's nothing worth finding about it.
Have you taken it apart yet? Sometimes there will be some info inside the neck pocket (if its a bolt-on) or inside the body cavity (under pickguard, pickups.) Might give you some leads.