As pump engines go, that does look to be a particularly fine example. that does look to be a particularly fine example. 
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Fresh Water Mole loves his baby boy more and more every day,
Fri 17 Aug 2012, 15:04,
archived)
Salvaged from the Whitehall underground war rooms, no less.Churchill was a great one for his pump engines.
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wheelybird mreee!,
Fri 17 Aug 2012, 15:06,
archived)