i have a 50's era orpheum arch top the finish is nice and a sun burst. it has a p-90 imitation pickup. it sounds like these guitars are a real mystery. mine has no serial number, and no mode number. only a pencil mark on the inside of the body that reads " c-393 " has a thick mahogany neck with what apears to be gibson style open book headstock. although the truss rod is not a gibson type. the fret board is nice dark ebony not colored stain. the body is a three ply maple laminet. it plays good and action is reasonably low. i know orpheum was known as a budget brand guitar made by other companies. has no characteristics of kay, harmony, or gretch like ive seen in photos online. is it worth anything? email jonahshore@yahoo.com with awnsers. i can send photos.