For a single $5 bill, Alyssa Aleckson found the perfect (read: cute) snowsuit for her daughter. It was in pristine condition, just like the suits she could have found elsewhere for maybe $30.

After 35 years in business, Chris and Ray Kelly have decided to sell their iconic sign and design company, Kelly’s Signs and Design.

But an art authentication group insists that the painting is an original by the Dutch master, stating that “even the museum is fallible.” ...