Silver jubilee
"Silver jubilee" in a Sentence (2 examples)
In Germany... a married couple, when celebrating the fiftieth anniversary of their marriage-day, are said to keep their golden jubilee; but on the twenty-fifth anniversary they have credit only for a silver jubilee.
By 1922, when The Railway Magazine attained its Silver Jubilee, the railways were in the throes of grouping, the Act for which had been passed the previous year, and which came fully into force in 1923.