Looks like Jimmy's playing an original ‘60s Valco/Airline Res-O-Glas model.
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"...originally manufactured by the Valco Guitar and Amplifier Company in the 1960s. Before the days of purchasing instruments online, players that couldn't afford a Gibson or Fender guitar sought cheaper alternatives. For White and many others, obtaining a guitar meant choosing between two of America’s biggest retail stores. Sears sold Silvertones and Montgomery Ward sold Airlines," White says. At the time, both retailers sold a variety of low budget guitars and amplifiers aimed at beginners, and their mail-order catalogues were crucial for reaching musicians in rural areas that could not travel to major cities.
Having several unofficial names, the red Valco Airline guitars were first known as the "JB Hutto Model," named after the blues guitarist known for using them. As the popularity of The White Stripes grew, some have referred to them as the "Jack White Model." Others may have referred to the guitar as the "Montgomery Airline" or "JB Hutto Montgomery Airline."
As part of The White Stripes, White played his Airline for nearly 10 years. He describes his guitar as a "hollow piece of plastic." The red plastic guitar body is made of two pieces called “res-o-glass”, a type of fiberglass. A narrow piece of maple runs down the middle of the body to anchor the neck, pickups and tailpiece. The Valco Airlines didn’t have a truss rod; instead, the neck was kept sturdy with reinforced steel. The controls are a bit puzzling for some players. Each pickup has a dedicated volume and tone control, but a master volume control sits next to the input jack. The volume and tone controls are above each pickup, next to the selector switch. While the pickups were made to look like large humbuckers, they are actually single coils that churn out a round and chimey sound."Quirkier still, the guitar only had 20 frets."
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