Argentina has a bit of an issue with fake money and people I have spoken to have even been know to get faked 2 peso (40p) notes. Taxi drivers are reputedly meant to be the worst with such tricks as if you give them a 100 peso note, switching it for a fake and handing it back, saying the one you gave them was fake and demanding another, not that I had any problems with them. However this 50 that I was given in change in a club in Buenos Aries is a beauty by anyones standards:
Note, if you will, the smudge on the 50 in the bottom right hand corner where the "watermark" has been applied following printing. OK it was dark and yes I may have been a little bit drunk but in the cold light of day when you pick it up it is obvious that normal printer paper has been used, about 3 times the weight compared to normal money. I´m keeping it as a souvenier in my wallet to remind myself not to be quite so blindly accepting in the future.