Did anyone here go to Narrow Gauge South West at Shepton Mallet last Saturday? One of the trade stands in the back hall (with the live steam layout) had what appeared to be 4mm scale etched brass kit of the Baldwin diesel similar to Moelwyn on the Festiniog Railway. I couldn't get close enough at the time to have a proper look as someone was discussing the intricacies of plastic injection moulding, but intended to go back later and forgot! The stand didn't appear to have any identification.
So, does anyone know what I'm talking about? If it is 4mm scale (not, for instance, 5.5mm scale) I would like to find out more!