I could be wrong but I think she was built in 1928? Not that long ago. It's a shame they're trying to outlaw steam on the mainline, if only they'd had more foresight like germany and switzerland who have strategic reserves of historical importance that are still allowed on the mainline and still operate regularly as they would.
The Duke - deemed as scrap, rescued and rebuilt hence the phoenix rising from the ashes, home depot is at Bury and built in Crewe 1954, had a refub 2 years ago a 1 million pounds - funded by the national lottery.
To see two mainline trains in action you'd struggle these days, not that it's not impossible, for those who are passionate about photography it's well worth going to one of the nightimte steaming events at barrowhill roundhouse, or nymr.