The auction, which begins at 5 PM, includes a chance to visit the Los Angeles set of "Mad Men" (the hit series featuring Batt); as well as the actual seats from the Belasco Theatre which President and First Lady Obama sat in during Joe Turner's Come and Gone; costume sketches from the Blithe Spirit signed by Angela Lansbury, Rupert Everett, Christine Ebersole and Jane Atkinson; the mask worn by Howard McGillin in his final Phantom of the Opera performance; the jeans worn by Daniel Radcliffe onstage in Equus; and Gwen Verdon's top hat from Chicago. Also offered will be walk-ons in Mamma Mia!, Jersey Boys, The Phantom of the Opera, Wicked and Chicago; and opening-night tickets to Superior Donuts, Wishful Drinking, The Royal Family, Memphis, Brighton Beach Memoirs, Broadway Bound, Finian's Rainbow, Ragtime, Fela, A Little Night Music and The Addams Family.

For more information on the Flea Market and other BC/EFA events, visit the BC/EFA website at www.BCEFA.org or call (212) 840-0770.