Martin Custom Shop D-18 Authentic 1937 Sinker Mahogany (526)

This limited-edition Custom Shop D-18 brings the power and punch of a 1937-style Dreadnought to life with rich, resonant sinker mahogany and a responsive Adirondack spruce top. Built with Authentic 1937 bracing, a hide glue dovetail neck joint, and an adjustable truss rod, it’s crafted for serious tone and long-term playability. The vintage gloss finish adds to the old-soul vibe—and its voice only deepens over time. Limited to just 50 guitars, this is a bold, vintage-inspired build made for players who crave character and clarity.

Top Material: Adirondack Spruce
Top Finish: Vintage Gloss
Top Color: Aging Toner
Top Inlay Material: Multi-Stripe
Binding: Brown Faux Tortoise
Bridge Material: Ebony
Bridge Style: 1930 Style Belly, Glue-in Long Saddle
Bridge String Spacing: 2 1/4"
Bridge Pin Material: Black Plastic
Pickguard: Faux Tortoise
Rosette: Old Style 18 Multi-Stripe
Saddle: Bone
Saddle Radius: 16"
Body Size: Authentic D-14 Fret
Construction: Dovetail Neck Joint, Hide Glue Construction
Back Material: Sinker Mahogany
Side Material: Sinker Mahogany
Back & Side Finish: Vintage Gloss, Dark Mahogany
Back Purfling/Strip: East Indian Rosewood
Bracing Pattern: Authentic 1937 Forward Shifted X-Brace
Brace Shape: Scalloped
Brace Material: Adirondack Spruce
Brace Size: 5/16"
Heelcap: Ebony
Endpiece: Brown Faux Tortoise
Neck Shape: D-18 Authentic 1937 Barrel & Heel
Neck Taper: Standard Taper
Neck Material: Genuine Mahogany
Neck Color: Dark Mahogany
Neck Finish: Vintage Gloss
Scale Length: 25.4"
Frets: 20 Total
Neck Joint: 14th Fret
Fingerboard Material: Ebony
Fingerboard Width at 12th Fret: 2 1/4"
Fingerboard Width at Nut: 1 3/4"
Fingerboard Inlays: Old Style 18, Abalone
Side Dots: Antique White
Headstock Shape: Solid with Square Taper
Headplate Material: East Indian Rosewood
Headplate Logo: Script Golden Era Overlay
Tuning Machines: Waverly Nickel Open Back
Tuning Buttons: Butterbean
Nut Material: Bone