ACA-F-031825-0000 Double entrance staircase by Francesco Maria Richini. Brera Portrait Gallery, Milan. Credit: Alinari Archives, Florence WARNING: Permission must be required for non editorial use. Please contact Alinari Archives Date of artwork: XVIII sec. Period and style: Eighteenth Century Location: Milan, The Brera Gallery Photographer: Alinari, Fratelli Date of photography: 1920-1930 Place of photography: Milan, Brera Portrait Gallery Collection: Alinari Archives-Alinari Archive, Florence Object type: glass plate Photographic technique: N silver gelatin dry negative Dimensioni: 21 X 27 cm Technical info Image sizes (pixel): 1900 X 2535 Image sizes (cm at 300 dpi): 16 X 21 Image sizes (MB): 3.34 Color space: RGB