Source: New Era / New Era Spike Lee’s New York sports fandom knows no bounds, and now he’s getting a chance to design one of his most important accessories. No, it’s not the abundance of New York Knicks jerseys that sit in his closet or the stacks of colorful glasses he owns, but the fitted cap that’s always planted firmly on his head. In honor of its annual 59FIFTY Day on May 9, New Era partnered with the legendary filmmaker to create a limited…