In 2014, a Tennessee couple paid 58 cents for a West Point sweater at a North Carolina Goodwill; months later, experts authenticated it as Vince Lombardi's, and it sold for $43,020

• Tennessee couple Sean and Rikki McEvoy bought the black-and-gold sweater in 2014, initially intending to take it to their vintage clothing store in Knoxville.
• Months later, they realised it could have belonged to legendary coach Vince Lombardi.