Gibson Gurus - Help me out!

[Maggot]

Hey guys. So today I got a call from someone interested in a trade for some gear I have. Anyways, He offered me an early 70's Gibson SG. I used google to find info about the guitar, but I didn't found much. What I did find is that it resembles a Gibson SG II, But this one has a Bigsby bridge. Also resembles an SG Deluxe, but the deluxe has trapezoid inlays. Ssomeone upgraded it with Gibson Iommi pickups and Grover tuners. How much do you think this guitar is worth in the market, and do you know what the model is? Thanks.

[GuitarBizarre]

from a search on that serial number, I have to say...



I can't figure out when the **** that thing was made. Gibsons serial numbers make NO SENSE WHATSOEVER before 1977, and they're complicated then!

[Maggot]

When I looked up the serial number, it told me that it was made in Kalamazoo, between 1971-73'. The only thing is that I do not know the actual model name.