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Black and white postcard showing the exterior of the observatory dome with its columns and entrance, and on the right the interior with the large equatorial telescope. Printed text on the front gives the dimensions: dome 24 meters in diameter, 26 meters in façade, and telescope 18 meters long with 0.76 meters opening. The back indicates the publisher as 'Établissement de Photographie GILETTA, Nice' and notes that correspondence on the front is not accepted by all foreign countries.
