on ebay...
http://cgi.ebay.co.uk/Gauge-3-MR-Johnson-2F-0-6-0-tender-3697-Elec-2-Rail-/250783798634?pt=UK_Trains_Railway_Models&hash=item3a63e1156a
Is this the same model that "Wagon & Carriage Works" were offering on their website (and on the "Bring & Buy" stall at the G3S AGM) for a few years?
It looks very much like it and, if so, the price has jumped by 300GBP....it was c.1200GBP...!
If it is the same one it has changed hands. The vendor is a dealer and is often seen at auction buying live steam models to re-sell on e-bay.
Model Carriage and Wagon also buy at auction sometimes of course, but he is not the same chap.
Mike