1971 - September 4 - An official mapping aircraft took this photograph.

1971 - September 4 - An official mapping aircraft of the Costa Rican government took this photograph. The aircraft was flying at 10,000 feet over Lago de Cote. An investigation could not identify the object as any "known" aircraft. Debunkers took some stabs at it, but it is still recognized as authentic by investigators. One of the few photographs of a UFO in or near water.
Personally I think that this is not a UFO but rather a 1970's pin staple used to keep pages together?

Lago Cote, Alajuela, Guatuso, Costa Rica

UFO Photo Throwback to1960 - Yacanto, Cordoba, Argentina. July 3

1960 - Yacanto, Cordoba, Argentina. July 3. This photograph was taken by Hugo F. Niotti, then a captain of the AAF. On July 3, 1960, Niotti was driving from Yacanto toward Cordoba. At approximately 4:30 PM, he was in the area of Villa General Belgrano, about 70 Km from the city of Cordoba. He suddenly noticed a rather close and unusual object hovering near the ground to the right of the road. He grabbed his camera and took this one picture. It was deemed authentic by Servicio de Informaciones de Aeronautica.