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To commemorate the 20th anniversary of John Mayer’s popular OM-28JM model, Martin collaborated again with John Mayer to offer this gorgeous high-end anniversary model. On John’s first signature model with Martin, he chose to include an aluminum border around the headplate and bridge. For this anniversary model, the border is expanded to the fingerboard and pickguard, and the border has been upgraded to a fine silver that will look amazing for the life of the guitar. Like Mayer’s previous models, it includes a thinner 1 11/16th width at the nut for comfort and speed. It also includes stunning satin nickel Waverly tuners. This edition includes a unique label with Mayer’s signature, and will only be available through August 2024, so make sure to check it out soon!Other specifications include:Body Size: 000-14 FretFinish Top: GlossConstruction: Dovetail Neck JointBack and Side Finish: GlossBracing Pattern: X-BraceScale Length: 25.4"Brace Shape: ScallopedFingerboard Width at Nut: 1 11/16''Top Material: Engelmann SpruceNeck Shape: Low ProfileBack Material: Guatemalan RosewoodNeck Taper: Standard TaperSide Material: Guatemalan RosewoodElectronics: NoneTop Color: Platinum Gray BurstBridge Style: Modern Belly - Drop in SaddleBinding: Antique WhiteBridge String Spacing: 2 1/8''Top Inlay Material: Abalone with Multi-StripeBridge Material: EbonyTop Detail: NoneBridge Pin Material: BonePickguard: EbonyBridge Pin Dots: Fine SilverPickguard Inlay: Custom InlaySaddle: Compensated BoneRosette: Abalone with Multi-StripeSaddle Radius: 16"Brace Material: Adirondack Spruce with VTSBack and Sides Color: Charcoal TonerBrace Size: 1/4"Back Detail: NoneBack Purfling/Strip: Style 45 with Black StripeBack Inlay Material: Abalone with Multi-StripeHeelcap: Antique WhiteSide Detail: NoneEndpiece: Antique WhiteSide Inlay Material: Abalone with Multi-StripeEndpiece Inlay: Boxed Abalone Multi-StripeNeck Material: Genuine MahoganyFingerboard Material: EbonyFinish Neck: GlossFingerboard Width at 12th Fret: 2 1/8''Neck Color: Dark MahoganyFingerboard Inlay Style: CustomNumber of Frets Total: 20Fingerboard Inlay Material: Abalone with Mother of PearlNeck Joins Body At: 14th FretFingerboard Binding Material: Antique WhiteSide Dots: AbaloneHeadstock Shape: Solid with Square Taper and DiamondTuning Machines: Nickel Open GearHeadplate Material: EbonyKnob: ButterbeanHeadplate Logo Style: Block Inlay Golden EraNut Material: BoneHeadplate Binding Material: Antique WhiteHeadplate Detail: NoneCase: Molded Hardshell Label: Embossed Paper Label Signed by John Mayer, Numbered in Sequence with No TotalPleked: Yes4 lbs 2 oz2839343For more information about the OM-45 John Mayer 20th Anniversary, please contact us.