The Fender Champ evolved out of the Champion 600 and 800 which launched in the late 1940’s.

Marshall amplifiers didn’t start using true serial numbers until July of 1969.

The full identifier of these amps was initially comprised of a model code, the serial production number and the date code.

Starting in 1984 the date code letter was moved from the end to the middle of the production code, between the model code and the production number.

Examples: U 08177 1986 Model #2204S JCM 800 Master Volume Mini-stack Version S/A V 10779 1987 Model #2204 JCM 800 Master Volume S/A W 30626 1988 Model #2203 JCM 800 Master Volume S W 29583 1988 Model #1987S Lead More Examples In October of 1992 Marshall began using stickers printed with serial numbers and bar codes.

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In 2011 the Dumble Overdrive Special was assessed as the most valuable guitar amplifier on the market, with used amplifiers fetching on average between ,000 and 0,000 each.

With a scant 300 Dumble amps estimated to exist, the myth, the demand and the history of each amplifier continues to grow.

The story of the Gospel Machine and it’s matching Fender Champ begins in a little town in Minnesota named Karlstad, where Christian and Ester Pedersen were farmers on a tract of land acquired through the U. In early 1957 Ester and Christian decided to purchase a new guitar and corresponding amp, and this Tele and Champ traveled all around Minnesota and the adjoining states.

Christened the “Gospel Machine” by the Pedersen family, the guitar was passed down from Ester to her daughter Adeline.

For more history on the unique man behind these iconic amplifiers Steve Rosen has a great article over at Rock Cellar Magazine, Behind the Curtain: Getting Amped with Alexander (Howard) Dumble.