Heritage did not immediately release the buyers' names, saying it wasn't known if they wanted to be identified.
Ivy said the buyers "were collectors but they were very happy about Mike." He said the 9-year-old boy had watched the movie about Eruzione and "knew exactly who he was and was very pleased to meet him."
Eruzione, 58, sold the Olympic items to benefit his three adult children and a grandson, along with the Winthrop Foundation, which finances charities in his hometown of Winthrop, Mass., just outside Boston.
Though he received no lucrative endorsements after the hockey victory, Eruzione said in a recent interview that he was not hurting financially.
"I thought this would be a great little nest egg for them for their future with their kids," he said.
He added that the memorabilia had remained in his USA hockey bag in the attic of his home since the historic Olympic victories.
Still, he kept one treasure.
"As long as I'm alive, the gold medal won't be sold," said Eruzione, now director of special outreach at Boston University and a partner in a nutritional supplement business that includes several other ex-Olympians, including gymnasts Nadia Comaneci and Bart Conner.