Up top is a vintage Iranian banknote with the Shah's image obscured by the Islamic Republic's stamp. Below that is one of several examples of anonymous, banknote-based protests of the current regime. V is for Victory, which I guess also starts with V in Persian? Also, does buying up boxes of inkpads or Sharpies in Green Movement green bring unannounced night-time visits from the Basiji militia?
There are more examples at Payvand.com, an Iranian diaspora news site.