What was the story with the ownership of Lough Derg/Lough Melvin. AFAIK they were never the outright property of the SL&NC, carrying plates stating that they still belonged to Beyer Peacock. One was sold recently...
'This locomotive makers No 7138, is the property of Beyer Peacock & Co Ltd., Gorton, Manchester, England from 0-6-4T loco 'Lough Melvin' supplied by Beyer Peacock in 1949 under a hire-purchase agreement to the SLNCR rectangular, 33x10 cm in original condition, front and back, the name L. Melvin is also chalked on the back, SRA311 £1000
I presume BP were paid off when the UTA got them?