Uruguay reported disc saucer observation — June 1957

On or during June 1957, at or near Uruguay, the source reports the following sequence: BRIEF SUMMARY OF SIGHTING: "Bright light round object uniform steady speed estimated 10 knots to slight brilliant disappeared below horizon" 10. Amalia Laconceguy de Becares, who said that she saw something that had a loud high frequency vibration: probably the object was very high. According to all this data we must conclude it was a flying saucer.