Pittsburgh Pirates 1913 Double-Fold Postcard – “Interior Forbes Field, Pittsburgh, Pa.” Lot 20. Pittsburgh Pirates 1913 Double-Fold Postcard – “Interior Forbes Field, Pittsburgh, Pa.” From Chautauqua Photographic, the color card shows a game in progress from center field. Postally used, it is taped along the fold and otherwise is good. Winning Bid $50. Back to List Winning Bid $50 Back to List