Luigi Militello displays the 2013 Red Sox World Series ring he found at his New York restaurant on Thursday night. In this case, the finder was good enough not to be the keeper. (Luigi Militello/Associated Press)

The last thing any Yankees fan wants to see is the Red Sox winning the World Series, as they did last year. The last thing a New York restaurateur, and huge supporter of the Yanks, expected to find in his establishment’s bathroom the other night was an official ring commemorating that Boston title. But there it was, and Luigi Militello didn’t let the team’s legendary rivalry get in the way of doing the right thing and giving it back to its owner.

Militello owns Luke’s Bar and Grill in Manhattan, and he was stunned to discover this on a bathroom sink at his restaurant Thursday night:

Yup, that’s the real thing, complete with 126 diamonds, 16 sapphires, 9 rubies and 14-karat white gold. Just sitting on a bathroom sink. Here’s what Militello told the Associated Press about it:

“I was like, geez, it’s big. Who would leave this here? I’m a big Yankee fan. What are the chances of this happening?”

A little after midnight, the phone rang at Luke’s. It was Drew Weber, the owner of the Red Sox’ short-season class-A affiliate in Lowell, Mass. — and the owner of the ring. He had been dining at Militello’s restaurant earlier, then subsequently realized that he was missing something.

“I went looking around my apartment and started having palpitations. Sweat was pouring off my forehead,” Weber told the AP. “I’m looking at my finger and it’s not there.”

Militello would not accept a cash reward for giving back the ring, but after some discussion, he agreed to let Weber and the Red Sox host him at Fenway Park on Sept. 28. It will be his first visit there, and it is also scheduled to be Derek Jeter’s final regular season game.

“Going for his send-off, that’s pretty great,” Militello told the AP.

All in all, a nice moment of New York-Boston comity. The Yankees fan gets a nice trip into enemy territory for what should be a historic game in pinstriped annals. And the owner of a Boston farm-system squad gets an enormous sense of relief.

Apparently, this was the first time Weber had worn the ring out and about. It will be remembered as the last.

“The ring and Drew Weber have learned their lesson,” Weber told the AP. “That ring is going on no more road trips.”