Let's revisit baseball uniforms that close using a zipper, that topic that interests no one except for me.
I probably should have checked this site a while ago, but Paul Lukas' Uni Watch blog centered a 2008 post on the auction of a somewhat rare St. Louis Cardinals jersey, a somewhat rare jersey that happens to feature a zipper.
Lukas consults with Brian Finch, manager of the Cardinals Hall of Fame, who reveals that 1955 was the last season for zippered uniform shirts. What happened after that year? Did zippers suddenly go out of style? Did interlocking metal teeth pose a safety hazard for diving ballplayers?
Still not sure about the answers to any of these questions, but at least we have a time frame to work with here. The mystery is slowly unraveling.