Martin OM- 42 Koa

Hello Guitar Friends, 

welcome to Ruhr Guitars - your premier source for used acoustic guitars.
Here you will find a large selection of modern steel string guitars and beautiful vintage guitars. We are always interested in buying or trading quality acoustic guitars. If you have any questions, please do not hesitate to contact us.    

We are offering this fantastic Martin OM 42 Koa from our range for sale.

Martin has been using koa since 1918, when the first Hawaiian-style guitars and ukes were introduced to the market. Koa has long been prized for its spectacular texture, which can range from a warm, mahogany-like tone to a brilliant, rosewood-like sound, depending on the density. The OM-42K with koa body came onto the market in 2005 in a very limited edition of only 160 pieces.

The guitar offered here is in mint condition. There are only minimal, if any, traces of use. The frets are as good as new.

CONSTRUCTION: Mahogany Blocks/Dovetail Neck Joint
BODY SIZE: 000-14 Fret
TOP: Solid Sitka Spruce
ROSETTE: Style 45
TOP BRACING PATTERN: OM
TOP BRACES: Scalloped 1/4″
BACK MATERIAL: Solid Figured Koa
BACK PURFLING: Style 45
SIDE MATERIAL: Solid Figured Koa
ENDPIECE: Grained Ivoroid
ENDPIECE INLAY: Black/White Boltaron
BINDING: Grained Ivoroid
TOP INLAY STYLE: Abalone Pearl with Black/White/Black Fiber Inlays
SIDE INLAY: B/W Boltaron
BACK INLAY: B/W Boltaron
NECK MATERIAL: Solid Genuine Mahogany
NECK SHAPE: Low Profile
NUT MATERIAL: Bone
HEADSTOCK: Solid/6 String Diamond/Square Taper
HEADPLATE: Solid East Indian Rosewood /C.F. Martin Block- Select Pearl
HEELCAP: Grained Ivoroid
FINGERBOARD MATERIAL: Solid Black Ebony
SCALE LENGTH: 25.4″
NUMBER OF FRETS CLEAR: 14
NUMBER OF FRETS TOTAL: 20
FINGERBOARD POSITION INLAYS: Style 45 Snowflake- Abalone Pearl
FINGERBOARD BINDING: Grained Ivoroid/Mitered
FINISH BACK & SIDES: Polished Gloss/ Dark Filler
FINISH TOP: Polished Gloss/ Aging Toner
FINISH NECK: Polished Gloss/ Dark Filler
BRIDGE MATERIAL: Solid Black Ebony
BRIDGE STYLE: 1 Style Belly
BRIDGE STRING SPACING: 2 1/4″
SADDLE: 16″ Radius/Compensated/Bone
TUNING MACHINES: Gotoh Gold w/ Butterbean Knobs
RECOMMENDED STRINGS: Martin MSP 4100 Light Phosphor Bronze
BRIDGE & END PINS: White w/ Abalone Pearl Dots
PICKGUARD: I-03 Tortoise Color/Beveled and Polished
CASE: 533 Geib Style


We choose our guitars carefully and want to resell them with a clear conscience. That is why we describe the guitars for sale as accurately as possible. Each guitar is thoroughly checked and optimized by our luthier before being sold.

The guitars can be played in Hattingen by appointment.

We want you to be happy with the guitar you have bought. Sometimes, however, you can only tell if a guitar is right for you after playing it for a while. If this is not the case, you have the right to return the guitar to us within 14 days.

We ship insured and professionally packed by DHL or UPS.

You can pay by bank transfer, Paypal and cash.

A video call via Whats App to see the guitar live is possible at any time.

We look forward to your inquiries

Your Ruhr Guitars Team