Stamp Collection Inherited - Part Two - Argentina, Bolivia & Brazil

Please see part one, this is a collection inherited by my great grandad. I'd be very grateful if anybody could provide any information on the stamps, ie. value or information. Many thanks.

It would be easier to find a decent local dealer to evaluate them. Although I can see a few early imperforated stamps that might have a greater value, only by watching the images I can't say if they are genuine or copies/reproductions or plain forgeries. A dealer with experience would be able to tell you in ten minutes what he thinks they would be worth without going through the process of expertizing and certifying each of them.