My Grandfather recently told me about a guitar that he had resting in his closet and asked me if I could spruce it up for him. The guitar is in surpisingly good condition for sitting in an old man's closet for years. The problem is, there's no identifying markers on the guitar, there's no name sticker, serial number........nothing. The only thing I have to go on is an engraving in the wood that says it was made in Japan, any help would be appreciated.

The shape the headstock makes me think thats its an old Harmony. I have 2 1959 Harmony archtops, and they have the same headstock.

Hope this helps