hey guys, this was my grandmothers gibson way back when, and I was wondering what model it might be. it's in rough shape and hasn't been played since she passed around 15 years ago
I think that's a Gibson ES-120 from the 1960s. Might be worth quite a lot of money, depending on the condition. It doesn't look too bad, but it's hard to tell by the photos.
Rig Winter 2017:

Fender Jazzmaster/Yamaha SG1000
Boss TU-3, DS-2, CS-3, EHX small stone, Danelectro delay
Laney VC30-112 with G12H30 speaker, or Session Rockette 30 for smaller gigs
Elixir Nanoweb 11-49 strings, Dunlop Jazz III XL picks
Shure SM57 mic in front of the amp