It was sent to a local group of ufological research called "UFO Gênesis".( http://www.ufogenesis.com.br/)

The name of the author is not given. He is a friend of one of the group collaborators. He says he took the picture at a birthday´s party. It is an scanned analogical photograph, so the investigators can verify the negative in order to attest to its authenticity.

Regards

Mario

A big thanks to Mario for sending the information to me.