Finally, after six whole hours of waiting I have been given my postcards.
You will receive a postcard with 350 coins if you are an EPF Agent!
If you are a Tour Guide you will get a postcard with 250 coins.
Together that makes 600 coins! As usual I will save mine for the next Penguin Style Catalog. I think Tour Guides should get paid the same amount as EPF Agents because Tour Guides are just as important as EPF Agents, aren't they?