Martin’s 14-fret Dreadnought model celebrates Chairman & CEO Chris Martin IV’s 60th birthday. Limited to a quantity of 60, the HD-35 CFM IV 60th model is truly a unique instrument with European spruce top with Martin’s Vintage Tone System (VTS) and herringbone pearl inlay. The 3-piece back consists of siris wings with an East Indian rosewood wedge; the fingerboard and bridge are beautifully inlaid with infinity hexagon outlines. Chris Martin has personally signed each label in these Limited Edition guitars.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.