FVQ-F-133133-0000 Bridge over the Sieve river. Stereoscopic photograph Credit: Alinari Archives, Florence WARNING: Permission must be required for non editorial use. Please contact Alinari Archives Photographer: Unidentified Author Date of photography: 1860-1870 ca. Place of photography: Florence Collection: Alinari Archives, Florence Object type: stereograph Photographic technique: P gelatin silver print Dimensioni: 7,5 x 15 cm Technical info Image sizes (pixel): 2718 X 1266 Image sizes (cm at 300 dpi): 23 X 10 Image sizes (MB): 4.02 Color space: RGB