This one has turned up on ebay in Dundee. Apparently refurbished in 1996.
http://www.ebay.co.uk/itm/Church-Pipe-Organ-/150758122865?pt=UK_MusicalInstr_Keyboard_RL&hash=item2319e26571
I think he's rather optimistic about the price... Dundee is VERY much worth visiting for an organ nut, what with the stupendous 1923 Harrison in the Caird Hall, the Hill in the Anglican Cathedral (with what is, I believe, the only surviving unaltered example of Rothwell's Orchestral Trumpet) and a few others, including a lovely Wordsworth & Maskell of Leeds in a stunning church (St Salvador) by Bodley, the richness and intensity of which can bear comparison with Pugin's St Giles Cheadle.