Celebration of Victorian age, for reprise in just over ten years? Ans is "diamond jubilee" which fits the bit before the comma but how does the bit after the comma lead to that, please? Have stared at off and on for over an hour!
It's the Times Big Book of Cryptic Crosswords 3 published 2016 and contains 200 classic puzzles from the most famous crossword in the world. Sorry it doesn't say when published in the Times.