Credit Mike Piazza with one more home run. With an assist from his dad.

Vince Piazza told The Post on Thursday the Piazza family wants to buy their son’s historic post-9/11 home run jersey from Goldin Auctions, if a fair price can be reached.

“We want to buy the jersey and donate it to the Hall of Fame,’’ Vince said, his voice rising with emotion. “Mike is on board. My God, it’s not right what is going on here. That thing belongs in the Hall of Fame. It belongs to all the fans of baseball. That home run was so important, not only for New York, but for the entire country.

“When Mike hit that home run, it lit the whole city up again. The city was dark, and that turned the lights on again. It’s a historic home run and I know how much it means to Mike.”

Vince said one more time with emotion: “That jersey belongs in the Hall of Fame.’’

It sure does belong in the National Baseball Hall of Fame in Cooperstown belong in Cooperstown.

“We want it so the fans can walk up and see that jersey,’’ Vince said.

Mike Piazza will be inducted into the Hall of Fame in late July. If this works out, if a deal can be reached, he will give the Hall a great gift. What a day that will be.

The Mets let the jersey slip through their fingers by selling it to a collector at a private sale a few years ago. They have not stepped up to the plate to buy it back. The current high bid for the jersey is $86,000.

Ken Goldin, president of Goldin Auctions, told The Post on Thursday he would welcome a call from Vince Piazza.

“I’d be happy to listen to them and their offer and take that back to the consignor,’’ Goldin said. “This is great news.’’

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Goldin reached out to Vince Piazza late Thursday, but the two have yet to talk.

Goldin also is scheduled to talk to representatives from the 9/11 Memorial Museum. Former Mayor Michael Bloomberg is the chairman of the museum.

The Mets, according to sources, are not going to make an offer. Vince Piazza, like Mike, is dismayed and frustrated by the Mets’ role in this entire situation.

Goldin Auctions previously told The Post a pre-auction deal can be made if the buyer agrees to donate the jerseySo there is groundwork for such a deal.

“It is a charitable donation,’’ Goldin said. “If the right opportunity presents itself, through the Mets or through a private individual, and financially it was right for my consignor, we would allow it to be purchased before the auction close [April 30] — but it would have to be a requirement that it either be donated or long-term loaned to a museum like the 9/11 Museum or the Hall of Fame.’’

Goldin said his company never has sold an item before an auction closed date, but could make an exception.

“If the Mets don’t want to do something and somebody wants to step in for them, I’m available by phone and email,’’ Goldin said.

After the Mets sold the historic jersey, the collector loaned it back to the Mets so they could exhibit it in their Hall of Fame at Citi Field.

Noted Goldin: “The Mets basically had somebody buy it and then they got to display it in their museum and got cash, the best of both worlds.’’

Earlier this week, in his first comments about the iconic jersey since learning the Mets had sold it, Mike Piazza told The Post: “I’m very disappointed with the situation regarding my game jersey from September 21st, 2001. … “I’ve expressed my feelings to Jeff [Wilpon] and the Mets,’’ he said. “. And while it never should have left Citi Field, they have assured me that contact with the seller has been made and they are making a concerted effort to get the jersey back.’’

His family is making that effort now, and for all the right reasons.

That home run — a two-run, go-ahead homer in the bottom of the eighth inning in a 3-2 victory over the Braves — was a moment of pure joy, after so much sorrow and heartache following the terrorist attacks on 9/11.

Vince Piazza repeated that the jersey never should have been sold in the first place.

“It’s a part of history,’’ Vince said. “Mike and I believe this jersey belongs in the Hall of Fame.’’

The Piazza family is doing its best to make sure that the autographed No. 31 Mets jersey — with the American flag on the back collar and that life-changing date, 9-11-01, on the sleeve, beautifully bordered by two more American flags — winds up where it belongs.

In the National Baseball Hall of Fame. For the people.