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 it is limited to the calendar year 2023, so make sure to check it out soon! If you’re looking for something more affordable, check out the OMJM 20th Anniversary Model, which is also new for 2023.

Martin OM-45 John Mayer 20th Anniversary Specifications

• Body Size: 000-14 Fret
• Top Materia: Engelmann Spruce
• Bracing Pattern: X Brace
• Brace Shape: Scalloped
• Back Material: Guatemalan Rosewood
• Side Material: Guatemalan Rosewood
• Neck Material: Genuine Mahogany
• Neck Taper: Standard Taper
• Fingerboard Material: Ebony
• Scale Length: 25.4”
• Number of Frets Total: 20
• Fingerboard Width at Nut: 1 11/16”
• Fingerboard Inlay Style: Custom Inlay
• Back and Side Finish: Gloss
• Finish Top: Gloss
• Top Color: Gray Sunburst
• Finish Neck: Gloss
• Bridge Material: Ebony
• Saddle: Compensated Bone
• Tuning Machines: Nickel Open Gear
• Pickguard: Ebony
• Case: Molded Hardshell