OM-18 Authentic 1933 VTS

Here to remind you why you fell in love with us in the first place, the new Authentics are 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 genuine 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. Martin™s new Vintage Tone System (VTS) is employed for the top and braces.

The new Martin Vintage Tone System (VTS) uses a unique recipe that is based on the historic torrefaction system. The VTS acts much like a time machine in which Martin can target certain time periods and age the top/braces to that era. This focused method allows Martin™s craftsmen and women to recreate not only the pleasing visual aesthetics of a vintage guitar, but also reproduce the special tones previously reserved for vintage instruments.



Construction: Dovetail Neck Joint – Hide Glue Construction


Body Size: 000-14 Fret Top Material: Adirondack Spruce


Rosette: Multi-Stripe


Bracing Pattern: Authentic 1933 X Brace


Brace Shape: Scalloped Brace


Material: Adirondack Spruce with VTS Brace Size: 5/16″ with 1/4″ Tone Bars


Back Material: Genuine Mahogany


Back Detail: N/A


Back Purfling/Strip: Madagascar Rosewood


Side Material: Genuine Mahogany


Side Detail: N/A


Endpiece: Madagascar Rosewood


Endpiece Inlay: N/A


Binding: Black


Top Inlay Material: Multi-Stripe


Side Inlay Material: N/A


Back Inlay Material: N/A


Neck Material: Genuine Mahogany


Neck Shape: Authentic 1933


Neck Taper: Standard Taper


Nut Material: Ebony


Headstock Shape: Solid with 1933 Taper Headplate


Material: Madagascar Rosewood


Headplate Detail: N/A


Headplate Logo Style: Script Authentic 1933


Overlay Headplate Binding Material: N/A


Heelcap: Ebony


Fingerboard Material: Ebony


Scale Length: 25.4″


Neck Joins Body At: 14th Fret


Number of Frets Total: 20


Fingerboard Width at Nut: 1 3/4”


Fingerboard Width at 12th Fret: 2 1/4”


Fingerboard Inlay Material: Abalone


Fingerboard Inlay Style: Old Style 18


Fingerboard Binding Material: N/A


Side Dots: Grained Ivoroid


Back and Side Finish: Vintage Gloss


Back and Sides Color: Dark Mahogany


Finish Top: Vintage Gloss Top Color: 1932 Shaded Finish


Neck: Vintage Gloss Neck Color: Dark Mahogany


Bridge Material: Ebony


Bridge Style: Authentic Belly – Glue in Long Saddle


Bridge String Spacing: 2 3/8”


Saddle: Bone Saddle Radius: 16″


Tuning Machines: Nickel Open Gear


Recommended Strings: SP Lifespan 92/8 Phosphor Bronze Medium (MSP7200)


Knob: Butterbean


Bridge Pin Material: Black Plastic Bridge


Pin Dots: N/A


Pickguard: Faux Tortoise


Pickguard Inlay: N/A


Case: Ply Hardshell