clarity42 wrote:
The M3M Geroge Martin is a Signature Edition M (0000)-14 Fret sized guitar that features a body of mahogany and a top of Italian Alpine Spruce.

While Sir George Martin is neither a guitar player, or associated with Martin guitars, he is well known for his association with The Beatles. Both Paul McCartney and John Lennon have owned D-28's, and Martin has activiely pursued McCartney for a Special Edition model for several years.

The M3M was designed by John Kurgan based on preferences expressed by George Martin, whose goal was to create a guitar suited to studio recording. According to Martin (the company) Sir George requested Martin SP coated light-gauge strings to reduce "collywobbles" (his word for string squeak)

The M3M was announced at the Summer 2005 NAMM show, and 127 units were built.
Speaking of the Martin M3M, you can see and hear Robbie playing one in this vid..