That originally came From Poke - Jimmy bought it from him via me when I was selling Pokes stuff for him. Don't think Poke ever played it out though.
He bought the Dynamic Three in the same deal - mind you he bought a whole boat load of stuff! In fact, many records that Jimmy (and Gary played) came from Poke's 'junk box' as he called it - Colt 45's began its life in there too...
Haven't heard from him for a long while, he was using his mining expertise on the channel tunnel last I heard.