Sho Bro 7 String Resonator Shot Jackson Model Square Neck Guitar 60s - Natural

This is a 60s Sho Bro Shot Jackson 7 string resonator guitar with a square neck. It has the Signature Shot Jackson fingerboard. The only thing I can find wrong is the little hole somebody drilled in the headstock right in the middle of the logo. This resonator has a great swampy tone for you blues slide enthusiasts. Im pretty sure this is an early one and I don't see any evidence of Gretsch construction that they made later. Im not 100% sure so any help would be greatly appreciated. Not mint but certainly not beat to death. Pretty rare.