In 1974, the Philadelphia Flyers became the first of the Class of '67 to win the Stanley Cup. In 1975 they won it again.
In 1991, the Pittsburgh Penguins raised the Cup for the first time. They also went back-to-back, winning again in 1992.
In 1999, the Dallas Stars were the 3rd of the 1967-68 expansion teams to win the Cup. They failed to win the Cup again in 2000, but they did in fact get back to the Finals, losing to Jersey.
The St. Louis Blues have yet to win win their first Cup (but they did get to the Finals three years in a row from '68 to '70).
What am I getting at here?
The Los Angeles Kings are the only other of the remaining teams from that expansion class still playing in the NHL and they are the reigning Stanley Cup champions. It's become kind of a thing for the Class of '67 to at the very least return to the Finals the year after winning their first Cup. Can the Kings keep that odd bit of historical trivia going this spring?
I wouldn't bet against them!