The US Dollar (USD) is issued by the Federal Reserve (FRB) and is probably the world's most recognized and globally accepted currency. Dating back to to 1792 the "greens" has been one of the more stable currencies of the world. The US-Dollar comes in seven different bills ranging between 1-100. The US-Dollar is also an official currency in ten countries outside the USA including Ecuador, El-Salvador and Zimbabwe. The US-Dollar is probably the most widely used currency within the online gambling community.