This is a 2011 National M1 Mahogany Tricone with original hardshell case featuring art deco grill and Mahogany body bound with Ivoroid and hand-painted metal coverplate to match the body.

Features and specs are as follows:

Body Material: Mahogany
Neck Material: Honduras Mahogany
Nut Material: Bone
Fretboard Material: Ebony
Fretboard Binding: Ivoroid
Fretboard Markers: Mother of Pearl Dots
Resonator: Three (3) 6 Cones
Bridge: T-Bridge
Tuners: Vintage National Three-on-a-Plate
Body Finish: Natural Satin
Coverplate Finish: Handpainted Mahogany Burst
Nut Width: 1.825
Width: at 12th: 2.3
Scale Length: 25 23/32
Overall Length: 38.75
Upper Bout Width: 10.25
Lower Bout Width: 14
Body Depth: 3.125