Tony Iommi's iconic riffs, heavy tones and massively-influential albums created the blueprint for heavy metal and many other genres to follow. His career, like the man himself, is universally loved and revered. And while his innovative tuning and playing styles were a major part of his monstrous tones, a Gibson SG named "Monkey" was at the center of it all. This heavily-modified 1964 SG Special was used extensively with the original lineup of Black Sabbath, heard on every album and tour of the 1