The 1970 Baltimore Orioles (108-54) were the best team in Orioles history. They won the World Series on October 15, 1970 over the Reds in five games.
In 2010, the Orioles celebrated the 40th anniversary of the 1970 team. They brought players from the team back and introduced them before the game See the pictures of a signed picture I got at the game (only 70 made, $500) and the jersey Bobby Grich wore at the ceremony (which I bought on eBay). I also have a signed print of the World Series trophy.
They were not able to celebrate the 50th anniversary last year because of Covid-19.