Here to remind you why you fell in love with Martin in the first place, the Martin OM-18 Authentic is constructed the old way - with hide glue, throughout, and historically-accurate detailing confirmed by using a CAT scan machine located at the Smithsonian Institute. Based on a 1933 OM-18 on loan from Fred Oster of Vintage Instruments, this guitar is constructed with a mahogany back and sides and an Adirondack spruce top using an authentic circa 1933 bracing pattern. Featuring period-correct "OM-18" Authentic-style appointments, right down to the Authentic 1933 neck barrel and heel.

Full specs are as follows:

Model: OM-18 Authentic 1933
Construction: Mahogany Blocks/Dovetail Neck Joint - Hide Glue Construction
Body Size: 000-14 Fret
Top: Solid Adirondack Spruce
Rosette: Old Style 18
Top Bracing Pattern: Standard ''X'' Scalloped (Authentic Style) - Circa 1933
Top Braces: Solid  Adirondack Spruce 5/16 in.
Back Material: Solid Genuine Mahogany
Back Purfling: Solid Madagascar Rosewood Strip
Side Material: Solid Genuine Mahogany
Endpiece: Solid Madagascar Rosewood in a Narrow 1933 Shape
Binding: Black Boltaron
Top Inlay Style: Multiple Black/White Boltaron
Neck Material: Solid Genuine Mahogany
Neck Shape: Authentic 1933 Barrel and Heel
Nut Material: Solid Black Ebony
Headstock: Solid/1939 Taper
Headplate: Solid Madagascar Rosewood/Authentic Style (1933) Gold Lettering w/No Black Outline
Heelcap: Solid Black Ebony
Fingerboard Material: Solid Black Ebony
Scale Length: 25.4 in.
# Of Frets Clear: 14
# Of Frets Total: 20
Fingerboard Width At Nut: 1-3/4 in.
Fingerboard Width At 12th Fret: 2-1/4 in.
Fingerboard Position Inlays: Old Style 18
Finish Back & Sides: Polished Gloss w/Aging Toner
Finish Top: Polished Gloss w/Aging Toner - 1933 Chris Hillman Shaded
Finish Neck: Polished Gloss w/Aging Toner
Bridge Material: Solid Black Ebony
Bridge Style: Authentic Style Belly w/Long Saddle
Bridge String Spacing: 2-3/8 in.
Saddle: 16 in. Radius/Long Fossilized Ivory
Tuning Machines: Waverly Nickel 8060 w/Butterbean Knobs
Recommended Strings: Martin Bronze Medium Gauge (M150)
Bridge & End Pins: Black
Pickguard: Delmar Tortoise Color
Case: 533V Harptone style

This guita is in excellent condition with only a few minor handling marks keeping it from looking new. Comes with original case also in excellent condition.