That is a beautiful Nathan 6-chime on the Flying Scotsman. We have a very similar whistle on Southern Railway locomotive 630 at the Tennessee Valley Railroad Museum.
While Flying Scotsman was in Australia doing rail tours, I wish that Great Northern, Victor Wild, Royal Lancer, Robert the Devil, Flying Fox, Doncaster, Persimmon, Harvester, Woolwinder, Prince Palatine, Lemberg, Pretty Polly, Shotover, Tranquil, Tagalie, Blink Bonny, Sceptre, Book Law, Tracery, Brown Jack, Knight of Thistle, Galtee More, Fairway, Centenary, Grand Parade, Trigo, Papyrus, Merry Hampton, Spion Kop, Spearmint, Cameronian, and Salmon Trout were preserved by Alan Pegler.