Martin 00-12FDB Grant Concert Engelmann Spruce & Sinker Mahogany Acoustic Guitar - Natural Aging Toner

Martin Custom Shop 00 Grand Concert Acoustic Guitar – Engelmann Spruce & Sinker Mahogany, Aging Toner | No Limit Guitar Co, Idaho Falls

This Martin Custom Shop 00 Grand Concert acoustic guitar is a one-of-a-kind instrument built exclusively for No Limit Guitar Co in Idaho Falls, combining rare sinker mahogany back and sides with a tonewoods-forward Engelmann spruce top for a playing experience that is as visually stunning as it is tonally refined. Inspired by the classic 00-18 style and configured to exacting Custom Shop specifications, this guitar delivers the warm, focused midrange and balanced projection that the 00 body shape has been celebrated for since Martin's earliest days. With an aging toner finish, gloss body, and a full suite of premium appointments, this is a collector-worthy acoustic built for players who demand the best.

Product Overview

Looking at this guitar in person, the first thing you notice is the warmth and clarity of that Engelmann spruce top — lighter in color than Sitka, with a silky, fine-grained texture that photographs beautifully and responds with exceptional sensitivity under the fingers. The aging toner finish gives the top a subtle golden warmth that evokes a vintage instrument right off the wall, while the gloss body finish makes every grain line and contour catch the light. The rounded 00 Grand Concert body shape is compact and comfortable, ideal for fingerpicking and light strumming in equal measure.

The back and sides are crafted from sinker mahogany — old-growth mahogany that was submerged in rivers during logging operations and later reclaimed, prized for its exceptional density, resonance, and the depth it adds to mid-range tones. Combined with the responsive Engelmann spruce top and Golden Era scalloped X-bracing, this guitar produces a rich, complex tone with excellent note separation and natural sustain. The faux tortoise pickguard, visible in the photo, adds a classic vintage touch that complements the overall aesthetic beautifully.

The neck features a GE Modified Low Oval profile with a High Performance Taper, making it exceptionally comfortable for players with a variety of hand sizes and playing styles. The black ebony fingerboard is oiled to a smooth playing surface and adorned with Old Style 18 select abalone inlays, with a 16" radius that makes both chord work and single-note runs feel natural. Grover Nickel StaTite 18:1 vintage button tuning machines provide precise, reliable tuning stability with a period-correct aesthetic that suits the instrument perfectly.

Ideal For

• Fingerstyle and fingerpicking players seeking a warm, balanced acoustic with exceptional note clarity and dynamic sensitivity
• Collectors looking for a rare, dealer-exclusive Martin Custom Shop instrument with premium tonewoods and period-inspired appointments
• Singer-songwriters and recording artists who want a focused, intimate acoustic tone that translates beautifully in both live and studio settings
• Players in Idaho Falls and beyond who want to own a truly unique guitar built to their dealer's exact specifications
• Advanced and professional guitarists seeking a lifetime instrument with the legacy and craftsmanship of C.F. Martin & Co.

Key Features

Engelmann Spruce Top with Golden Era Scalloped X-Bracing Engelmann spruce is prized for its light weight, fine grain, and exceptional responsiveness — it produces a clear, open tone with more warmth and complexity than standard Sitka, especially at lower playing volumes. The Golden Era scalloped X-bracing pattern enhances resonance and projection while preserving the top's natural flexibility and voice.

Sinker Mahogany Back & Sides Sinker mahogany is reclaimed old-growth wood recovered from riverbeds, delivering a denser, more tonally complex character than standard mahogany. The result is a guitar with deep, focused midrange, natural warmth, and the kind of sustain that only comes from truly exceptional tonewoods.

Black Ebony Fingerboard & Bridge with Select Abalone Inlays The black ebony fingerboard and GE Modern Belly bridge deliver a slick, fast playing surface and precise intonation, while the Old Style 18 select abalone inlays add a refined vintage elegance that sets this guitar apart from production models.

GE Modified Low Oval Neck with High Performance Taper This neck profile is inspired by Martin's Golden Era instruments and provides a comfortable, natural-feeling grip that encourages long playing sessions. The High Performance Taper adds a modern playability advantage, allowing for smooth position shifts across the full length of the neck.

Aging Toner Gloss Finish The aging toner applied to the Engelmann spruce top gives this guitar an instantly vintage aesthetic — a warm, golden hue that makes the instrument look like it has decades of playing history. The gloss body finish deepens the visual impact while the satin neck finish keeps the playing surface fast and comfortable.

What's Included

• Martin Custom Shop 00 Grand Concert Acoustic Guitar (Aging Toner)
• Martin 5-Ply Hardshell Case
• Martin Authentic Acoustic Lifespan 2.0 Custom Light Strings
• Custom Shop Certificate of Authenticity
• Manufacturer warranty

Technical Specifications

Get Your Hands on This Martin Custom Shop Guitar Today

This Martin Custom Shop 00 Grand Concert is a rare, dealer-exclusive instrument — built specifically for No Limit Guitar Co in Idaho Falls and not available anywhere else. Stop by the store to play it in person and hear what sinker mahogany and Engelmann spruce can do together, or contact us today to learn more and make it yours.