UPDATE 1-Eisner's Topps names former TV Guide exec as CEO

* New CEO O'Hara joins from Lions Gate unit

* Eisner firm, Madison Dearborn bought Topps in 2007

NEW YORK Feb 9 (Reuters) - Topps Co, the trading card and chewing gum company chaired by onetime Walt Disney Co (DIS.N) chief Michael Eisner, on Tuesday named former TV Guide Network president Ryan O'Hara as its chief executive.

O'Hara replaces Scott Silverstein, who has led Topps since the New York-based company was acquired in 2007 by Eisner's Tornante Co and by private equity firm Madison Dearborn Partners LLC [MDPRT.UL]. Silverstein joined Topps in 1993 as general counsel, and will remain on its board.

Last week, O'Hara stepped down from TV Guide, a unit of Lions Gate Entertainment Corp (LGF.N), and where he had also overseen TVGuide.com. He will move to New York from Los Angeles to take on his new job, which begins on March 1.

Founded in 1938, Topps is perhaps best known for its baseball cards, and last month began a multi-year agreement to become the exclusive trading card maker for Major League Baseball. (Reporting by Jonathan Stempel; Editing by Bernard Orr)