A New Era pillbox Pittsburgh Pirates baseball hat is seen in the News Photo - Getty Images

MLB Tiers: From the Yankees to the Nationals — the Iconic, Good, Just OK and Bad baseball caps across the league - The Athletic

A New Era pillbox Pittsburgh Pirates baseball hat is seen in the News Photo - Getty Images

Pittsburgh Pirates Pillbox Snap Back Baseball Hat Cap… - Gem

MLB Tiers: From the Yankees to the Nationals — the Iconic, Good, Just OK and Bad baseball caps across the league - The Athletic

Pittsburgh Pirates MLB New Era Major League Baseball Fitted

Old school Hats, New era snapback, Swag outfits men

The Common Man's Crown - The New York Times

Pittsburgh Pirates Pillbox Snap Back Baseball Hat Cap… - Gem

The Common Man's Crown - The New York Times

Baseball cap history and timeline

A New Era pillbox Pittsburgh Pirates baseball hat is seen in the News Photo - Getty Images