We checked with our friend, George Gruhn about this guitar. He says it is a late '49 by the headstock and work order number. The work order # is 4696 15. LG-2 is branded inside on the back center strip.
Mahogany back & sides
Red Spruce top under a traditional sunburst
This model was introduced in late 1942, with a rounded neck, and rounded heel
It sounds like tree! Very woody and with plenty of breath to the note
Ivoroid bindings, 1 stripe rosette
George believes the tuning machines are mid 1950 replacements (Kluson deluxe)
Rosewood fretboard with MOP dot markers
Rosewood bridge with vintage through saddle & pearl dot inlay
Black, plastic bridge pins
Scalloped, X-bracing
Mahogany neck with adjustable truss rod
Black headstock faceplate with Gibson "block" logo