[Vintage Heritage 60's ? Any help dating this thing]

Thanks all!! She is currently at the luthier waiting to get a repair estimate. Can't wait to have her back

[Vintage Heritage 60's ? Any help dating this thing]

So I think I might be the luckiest person in the world. I found this vintage Heritage at a local thrift store for  5 dollars. The bridge is pulling up and there are some cracks. I dropped it off to get an estimate for repairs. I'm just trying to understand exactly what I got here.

The Serial I believe is 530791 the Third digit is hard to read the grain of the guitar is really heavy there originally I thought it was a 8, Which I've seen could be 

Year: 1966, 1968 or 1969

Location: Kalamazoo, MI

Info: serial number is stamped on the back of the headstock

 

Trying to figure out if I can exactly what this guitar is. It has just the Single X bracing. Grover Tuners that say Pat Pen. No pickguard. Belly Down. Is it Brazilin or Indian Rosewood?

 

Anyhelp?