Anyway, back to the coins. The United States has produced some extreme rarities that have fetched far over a million at auction. There are pedigree examples that have hit ten million. I get all excited when I find a dish if coins or a jar full of cents and tokens at a barn or yard sale. I shake a little sometimes when I'm opening a box of coins I bought an an auction. All it takes is the right coin and you could find a million dollars plus just like that.
I'll start out with the 1804 Silver dollar that every coin collector in the world would give his eye teeth to own. Me I would own it for a short time because the five million or so it would bring at auction would entice me a lot more then the coin.
Move on to the extremely rare 1894-s dime and a cool seven million windfall would make you the absolute sexiest on the block. Then again capital gains would suck up a big chunk.
Today the increase in speed of communication as well as the reach we now have globally with the Internet auction sites like eBay and others, a vast collector base has assembled electronically and now bid on coins to the point of creating a frenzy.
This type of rarity is sought out by people like the king of Siam and millionaires like Bill Gates. The actual value would be set by them and not until the auction was over would we have an intrinsic value.
There are many more United States coins that have hit this prestigious number. The list would be to long to go into here. I recommend The Redbook Of United States coins for all of your questions about value and stats. It's a great book that comes out every year and has for 50 some odd years.
Coin collecting is a fun and affordable hobby. These coins that have brought millions are probably not going to make it into your collection. The fun isn't the value but the history and the satisfaction of completing the collection you set out to own.
1804 United States Silver Dollar
A One Million Plus Coin All Day
Amazon Price: $59.63 Too low to display Buy Now
(price as of Oct 21, 2015)