Mrs. Met
... that New York Mets mascot Mrs. Met debuted in the 1960s, shortly after Mr. Met, making her one of Major League Baseball's oldest mascots?
... that <a href="./New_York_Mets" id="mwBw0" rel="mw:WikiLink" title="New York Mets">New York Mets</a> mascot <b id="mwBw4"><a href="./Mrs._Met" id="mwBw8" rel="mw:WikiLink" title="Mrs. Met">Mrs. Met</a></b> debuted in the 1960s, shortly after <a href="./Mr._Met" id="mwBxA" rel="mw:WikiLink" title="Mr. Met">Mr. Met</a>, making her one of <a href="./Major_League_Baseball" id="mwBxE" rel="mw:WikiLink" title="Major League Baseball">Major League Baseball</a>'s oldest mascots?<!--special occasion hook for July 16, U.S. daytime-->