[This](http://www.guitarworld.com/neil-young-ragged-glory?page=0,1) Guitar World interview says, "The stage rig is rounded out by a 25-watt tweed Fender Tremolux of Cragg’s that the tech rebiased to run at 40 watts, as well as a 'high-powered, four-6L6' tweed Fender Twin."
Around 25:00 minute mark, Greenberg mentions the usage of his 1954 Fender Twin Tweed.This amp was shown on the video, but Greenberg himself mentioned playing this model. Previous owner recovered the amp in black Tolex.
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