Today, February 19th, marks the 66th birthday of one of the architects of heavy metal, the master of riffs, legendary Black Sabbath and Heaven and Hell guitarist Tony Iommi. Without the sound itself of his Gibson SG plugged into a wall of amp stacks the genre as we know it might very well not even exist. As well as being a sonic pioneer in the world of ultra-heavy evil riffing, Mr. Iommi is also a trendsetter in the world of rock facial hair. Though he’s gone clean shaven from time to time, he is best known for sporting any number of variations on the mustache. Whether it’s the early peach-fuzz of the Sabbath’s early days, the manly handlebar ‘stache of the band’s Golden Years, or his recent forays into goatees, Mr. Iommi’s facial hair is a major part of his image and one of the many things that makes him such a badass. So in honor of his birthday let’s stroll down memory lane and take a gander of the facial hair evolution of Tony Iommi.