While dinar banknotes that were issued in Iraq during 1990 and 2003 as well as one in 1986 have the visage of Saddam Hussein on them, you will find that when you are exchanging Iraqi currancy currently, you are likely to not see such notes. Something else you should know about Iraqi currancy is that after the Gulf War ended in 1991, much of the currency was made in China which resulted in problems due to poor ink and the use of newsprint for paper notes instead of linen based paper. Whether you want to buy dinar or exchange dinars to dollars, you will find that it is easy to do when you are in Iraq.
Even though Iraqi currancy collapsed as far as the Iraqi dinar is concerned, the highest denomination that was ultimately printed until the year 2002 was 250 dinars. By the same token, US currency versus Iraqi currancy was no contest because even in 2012, the dollar was worth 1,200 dinars. Fortunately, the Iraqi dinar revalue is consistent and even though the currency is considered to be exotic, it is still used across the country.
One of the reason that Iraq is nicknamed the cradle of civilization is because it is where one of the first civilizations actually emerged, but today, Iraqi currancy in the form of the dinar is something that has only been around since the 20th century. Even though you can use US dollars just about anywhere in the country since this is how oil is sold, you can find a dinar banker in most places if you would prefer to use local currency instead. By doing so, you will have an easier time of getting in with the locals.
As you begin to use the dinar, you will see that the currency is not so different from any other. After all, money is money regardless of what form it comes in or what language it is written in. As long as you know how the denominations work and can utilize them properly, you will be able to get around and win favor with the local population.
In the end, you will enjoy your use of dinars while you are visiting Iraq. Whether you are there for business, education, or pleasure, using local currency will help you to have a greater understanding of the nation. When you return, you can always exchange your dinars back.