An art collector and businessman from Devon made an unknowing investment when he purchased an Andy Warhol sketch from a Las Vegas jumble sale for only five dollars. 　　Andy Fields made the purchase thinking he was simply in for a bargain, but little did he realize that it could be the best investment he had ever made. 　　Fields:"My friend and I were going out to garage sales and naturally I was looking for smaller things -- art and jewelry and I came across these pictures with him and I thought, well there's a bit of a bargain, only five dollars for five pictures and indeed," 　　"It wasn't really until I'd done all of the research and found out that it did lead to about 1939, possibly 1940 when Andy Warhol was in bed with cholera, that I realized to the full extent what we were sitting on, even though it's just a sketch, but it could potentially change history being his earliest sketch of modern art. I think he started doing modern art at about the age of 23," 　　Fields purchased the art work from a drug user whose aunt used to care for Warhol as a child.The illustration, which is a signed sketch of 1930's singer and actor Rudy Vallee, is believed to have been drawn by Warhol when he was 10 or 11-years-old. 　　Fields contacted a US-based art appraiser, who gave him the value of the work.Fields: "He's put a figure of USD$2.1 million dollars on it, so we'll see. Not a bad investment from five bucks." 　　Fields said he has no plans to sell the work, but wishes to have it displayed at a museum so Warhol fans can all enjoy it.