The Kuwaiti Dinar is the highest valued unit of currency. 
The $10,000 bill is also the most valuable circulating global currency, according to Roberto Cacciamani, former director of the International Bank Note Society. Most $500 and $1,000 bills are quite common, and are typically worth only a small premium over face value. Circulated 1934 series notes are usually worth from $500 to $800 for the $500s and from $1,000 to $1,400 for the $1,000s, depending on condition. The $10,000 bill is the most valuable U.S. currency now in circulation, according to the U.S. Department of the Treasury. The Treasury stopped printing it, along with the $500, $1,000 and $5,000 denominations, during World War II, and all such bills were declared obsolete on July 14, 1969. Google passed Exxon Mobil on Friday to become the second largest company in the United States by market value. The search engine giant has a market capitalization of almost $395 billion, compared to a market value of about $392 billion for Exxon. Apple, worth about $465 billion, is the most valuable company in the U.S. Shares of Google (GOOG) are on a tear, having risen 52% in the past year. All genuine Confederate currency has some collector value, although most of the 1864 issue notes are very common (an exception being the $500 note, which is common but popular and is worth from $200 to $400 depending on condition). Earlier issues range from common to rare. The currency that is currently worth the most is the Kuwait dinar, worth US$3.45. The Kuwaiti Dinar is the highest valued unit of currency. 1 Kuwaiti Dinar is-at current rates-worth 2.02 Pounds Sterling or US $3.73 As of Dec 27, 2010: 1 Kuwaiti Di … nar (KD) = 3.55 USD (US Dollar) = 2.29 GBP (Pounds Sterling).
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