Here we offer a Wrenn W2230 Class 20, Bo-Bo diesel in BR blue. The loco has probably been repainted and has been re-identified as 20 004. Loco runs quietly and smoothly - slightly slower in one direction than the other - but that should improve with a very small drop of oil and several minutes running  I have shown it running at different speeds on the video. Comes in the correct Wrenn box 

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