This is a few days later than originally planned due to problems with the haulage company responsible for moving the loco from Statfold Barn to Dinas.
The Darjeeling 19B will arrive at Dinas later in the week and run to Porthmadog to share pilot and shuttle duties with the Mallet.
In October, the B Class - complete with its two replica Darjeeling carriages built at Boston Lodge - will undertake a run over the full 40 miles of the F&WHR offering the nearest thing to a trip on the Darjeeling Himalaya Railway without travelling to the subcontinent.
These trips are private charters, but a limited number of tickets will be available to the public on what promises to be a unique experience. More details will be published when timings are finalised.
Watch this space.