Project 10073 Record Card — Montevideo, Uruguay, 30 January 1958

This document is a Project 10073 record card and associated investigation file regarding an unidentified aerial phenomenon reported in Montevideo, Uruguay, on January 30, 1958. The report was compiled by the Centro de Investigaciones de Objetos Voladores Inidentificados (C.I.O.V.I.) under the Uruguayan Air Force Intelligence Service. The primary witness, a 36-year-old single male, reported observing a luminous, metallic, plate-shaped object at approximately 05:15 GMT. The witness described the object as being roughly 30 centimeters in size, exhibiting a rotating motion, and moving vertically at a high speed. He noted that the object emitted sparks from its edges and displayed a circular fluorescence, which he compared to a fluorescent tube. The witness also reported a humming sound similar to that of a bee. The weather conditions at the time were described as cloudy and stormy with high humidity. The investigation form notes that the witness was standing on the sidewalk when he observed the object. The investigators expressed caution regarding the report, noting that it relied on a single observer and that the specific detail of sparks being emitted from the object was considered unusual or 'doubtful' compared to typical flying saucer reports. The document also references a separate, controversial 1955 incident in the Department of Tacuarembó, where a photograph of a flying saucer was allegedly taken, though the authenticity of that image has been widely debated. Ultimately, the official conclusion for the 1958 sighting was that the case provided insufficient data for a definitive evaluation, particularly because no photographic evidence was available to support the witness's account.