Priceless items have been stolen from the Yogi Berra Museum — which houses the Hall of Famer’s World Series rings — and the Yankee legend is devastated over the heist, sources told The Post.

Authorities believe the “professional” burglars broke in early Wednesday through a minor-league stadium attached to the museum at Montclair State University’s campus in New Jersey.

The Yogi Berra Museum and Learning Center had on display some of his most prized possessions, including MVP trophies and the uniform and mitt used while catching Don Larsen’s perfect game in the 1956 World Series.

The museum recently put up love letters Berra wrote to his wife of 65 years, Carmen, who passed away in March due to complications from a stroke.

Campus cops, who are leading the probe, refused to provide an inventory of what was taken.

“We’re very hopeful these items will be recovered,” the museum’s director, Dave Kaplan, told The Post. “It’s terrible that somebody would do this.”

Montclair State University Police Department confirmed that a break-in and burglary happened Wednesday morning and that they were working with county, state and federal agencies.

“Since this is an active investigation, there are no further details at this time,” Chief Paul Cell said in a statement.

Officers on the scene told The Post they’d likely be there for a while as they try to figure out what was stolen from the one-of-a-kind Hall of Famer’s collection.

The museum’s memorabilia is not just limited to Berra. It also includes broken bats used by fellow Hall of Famers Willie Mays and Stan “The Man” Musial and other pieces of baseball history.

Essex County Sheriff Armando Fontoura said that he’s in the dark about what was taken but that the museum is an “iconic asset” to local residents and to “baseball fans everywhere.”

“We’re outraged that this vital institution was violated,” he said, adding that they are offering a $5,000 cash reward for any information that leads to the arrest of the thieves.

“That stuff in there is valuable,” Fontoura said. “It’s all one-of-a-kind stuff. It’s all his personal stuff.”

The museum, which opened in 1998, features exhibits that chronicle Berra’s storied career. On Wednesday, the Web site said, “Museum closed temporarily. Sorry for the inconvenience.”

Lisa Savage, who bought Berra’s beautiful blue Colonial-style home he lived in for 19 years on Highland Avenue, was shocked to hear of the burglary.

“That’s so sad,” she said. “I can’t believe it!”

As a star player for the Bronx Bombers, Berra helped the team clinch 10 World Series and win 14 American League pennants.

Berra, now 89 and residing in Montclair, is well known for his Yogisms including “It ain’t over ‘til its over” and “When you come to a fork in the road, take it.”