This unused card was issued in 1985.  It involves Parque Nacional Marinho Dos Abrolhos and at least two species of sea birds, Sula dactylatra and Sula leucogaster.  Possibly Phaethon aethereus as well.  (The postmark in 31100411 wasn’t so clear, but this one is.)  Two of these maximum cards are available, issued by Correios e Telegrafos and bearing serial numbers 006153 and 006158.  Aging somewhat.  Grades: 2