Old advertisement in an envelope.  The envelope is about 5 by 6 1/8 inches.  The ad fits inside and is a little smaller but folded. The envelope is quite smooth, no tears or damage.  Some age discoloring and a few light spots.  Almost Exc envelope.  Same with the ad inside.  Smooth and clean with no tears, marks or damage etc and is Exc too.  Has what looks like a 1958 date on the ad.  Gama Reis operated his cork business in the 1950s and 1960s etc in Portrugal.