Stack’s Bowers Galleries will conduct the official auction of the March 2011 Whitman Coin & Collectibles Baltimore Expo. The premiere event conducted under the Stack’s Bowers Galleries banner by the newly merged Stack’s and Bowers and Merena Auctions, the March 2011 Baltimore Auction continues the tradition and success of America’s most prestigious numismatic auctioneers. The 1915-S Panama-Pacific Exposition $50 Octagonal, MS-64 (PCGS) and 1915-S Panama-Pacific Exposition $50 Round, MS-63 (PCGS) are two of many highlights in Stack's Bowers Galleries 2011 Baltimore Auction which features more than 5,100 US coin, currency and exonumia...