Unique swap proposal for someone in Rio de Janeiro Brazil

My wife is traveling to Rio in July (I can't go, unfortunately) but I was hoping to set up an exchange if possible. I live in Mexico so I have access to lots of Mexican currency but I have a bunch of different things for exchange. I have a full set of the most modern Brazilian banknotes and coins so I'm looking for some of the older stuff that doesn't circulate any more. 

As for logistics, I would have my wife leave your notes and coins at her hotel desk where you would pick it up and leave your batch of notes and coins. 

If your wife is in Rio at early July, she can go to Niterói.

According to the calendar of the Brazilian Numismatic Society there will be a fair in Niterói at 05 and 06 July.

https://snb.org.br/calendario/calendario-numismatico/

Don't ask me where, never been in Rio. I only go to the fairs that are in São Paulo (which is not much far from home).

Nah, she'll be there in late July. Thanks for the tip though!

Forgot to tell earlier, there are a few shops and a street fair in Rio listed at the Numista outings.

That's the link of the street fair:

https://en.numista.com/outings/antique-fair-and-numismatics-of-praca-xv-rio-de-janeiro-135.html

Don't know the current status of the fair, if it's still there, you'll have to ask someone who lives in Rio.

I appreciate the work you're putting into this but she won't have time to do much outside of the hotel, and she's not going to spend it hunting for coins and banknotes for me! Thanks again!