Late 1960s or early 1970s.
Cool guitar.
If it has a laminated maple top, it's a Model 456/S/V2.
If it is a thinline w/a laminated maple top, it's a Model 4560/S/V2.
If it havs a laminated spruce top, it's a Model 457/S/V2.
If it is a thinline w/a laminated spruce top, it's a Model 4570/S/V2.
Hard to see these details in your lo-rez pix.
Bolt-on or glued-in neck?
Bridge and knobs look replaced.
Here's a Model 4570/S/V2 with a B6 Bigsby instead of a Hofner vibrato: