"They looked real old, like they were really worth a lot of money," Munford said.
Munford and his wife, Clarrisa, are both retired from the Army and closed on the Columbia home in mid-October.
He texted pictures of the coins to the home's former owner and made arrangements to return them.
"I was just thinking, you know, they're not mine. They're probably a family heirloom, so I'm gonna go ahead and make sure he gets them back," Munford said.