Savage

I just picked up an acoustic guitar and not sure what it is. It was sold as a Gibson. It has Gibson on the headstock and serial number 73367119 stamped in the back of the headstock. Dark finish with solid spruce top. Ovation looking bridge. Wood around sound hole. Arched back like a Guild. Changed tuners. No model # or label on it. Serial # dates it 1977 ? Any info would be appreciated . Comes with a period correct Gibson hsc.