I finally decide to turn the list upside down and see what was posted at the very beginnining.  For a modeling idea I've been considering I have been looking to see if any 0-6-0Ts were ever built with piston valves instead of slides.  I found the Army engines but they are side tanks and hideously ugly but now the Holy Grail.  Thanks for posting.  Do you know anything about the history of this beauty?
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