This is an advertising card from Abbott for Emulsao de Polivitaminas.  You need to be slightly a linguist to appreciate this.  The card is captioned in Spanish, and was mailed from Ecuador with two stamps and an address label some years ago.  The postmark is indistinct.  But the printed message and vitamin constituents are in Portuguese, as the card went to a doctor in Brazil.   Hard to grade, so we’ll say: 3.