Can anyone provide a list like this one below for Australian currency?
Would be very handy!
http://coins.about.com/od/uscoins/tp/errorvarieties.htm
Would be very handy!
http://coins.about.com/od/uscoins/tp/errorvarieties.htm
There are a number of fairly valuable U.S. error coins and die varieties in circulation today. These coins are overlooked by people because they have small distinguishing characteristics, such as a modest doubling of the coin image, or minute differences in the size or spacing of the letters in the legends. Learn which of your pocket change coins is worth a large premium over face value, and why.
Note: Click on the images to greatly enlarge them and see details.
Tip: Be sure to do your hunting with at least a 6x power magnifier so you don't miss anything!
1. 1969-S Lincoln Cent With a Doubled Die Obverse
Photo courtesy of Heritage Auction Galleries
This coin is exceedingly rare. The early specimens were confiscated by the Secret Service until the U.S. Mint admitted they were genuine. Counterfeits abound, but usually have the wrong mint mark.
How to Detect: Look for clear doubling of the entire obverse ("heads" side) except for the mint mark. If the mint mark is doubled, it is probably a case of strike doubling, rather than a doubled die, which isn't worth much. (Mint marks were punched in the dies separately in 1969, after the doubled die itself had already been made.)
Approximate Value: Around $35,000 or more in EF-40 or so.