The Royal Duchy was a named train in the 1950’s. It will be drawn by 44871 – a Stanier Black 5, built for the LMS at Crewe in 1945.
The Royal Duchy should be passing the Tally Ho southwards (towards Totnes and Plymouth) at about midday and returning at about 7.30pm.
More information from The Railway Touring Company, UKsteam Info and Realtime Trains out and return.