Brad, I'm just mystified how liquid the market has to be, or how comparable a similar item would have to be, before it can be used by the IRS to determine tax liability.
The real estate example was not tied to the IRS, it was a simple representation of using similarity in product to determine a vlue for taxation (in this case property taxes on a local level).
For the baseball, the IRS assigned the ball an arbitrary value and intended to tax the holder on it even though no actual value had been established.
Back to the coin thing...
A lot of people seem to be confused about coinage and who produced it. The United States Mint produces gold coins which ARE legal tender, and are marked in specific denominations - $5, $10, $50, etc. - even though the value of the metal content may be wildly different. There are third-party coin producers which make commemorative coins that are not legal tender anywhere by any government. Then, there are third-party coin producers that make coins which have been designated as legal tender for some country other than the United States.
When you see ads for coins look for the tender designation. Anything that is legal tender for the United States will specifically say so. Coins that are not legal tender in any form often won't say anything about being legal tender, on the coin or in the ad. Coins that have been desginated legal tender somewhere else will usually say something like "Legal Tender in the Bananastan Rebublic" or somesuch.
Brad
Must respectfully point out that per the Constitution, you are wrong. Think about it - the Constitution specifically mentions "dollars" long before any "United States" currency could have been coined, (and there is a reason I use the term, "coined".) By the Constitution, (which can only be altered by ammendmant), only Congress can ".. coin Money,
regulate the Value thereof, and of
foreign Coin, and fix the Standard of Weights and Measures;(Article 1, Section
". This power is further explained in Section 10. "No State shall enter into any Treaty, Alliance, or Confederation; grant Letters of Marque and Reprisal;
coin Money; emit Bills of Credit;
make any Thing but gold and silver Coin a Tender in Payment of Debts;..."
Just so we are clear - CONGRESS is to "coin" money, AND only "gold and silver coin". Further, CONRESS is to set the ratio of gold to silver, AND assign the value of foriegn coinage - thus making foreign money "legal tender". But still there is the question - what "dolar" is the Constituion refereing to in Ammendmant 7?
"Amendment 7 - Trial by Jury in Civil Cases. Ratified 12/15/1791.
In Suits at common law, where the value in controversy shall exceed
twenty dollars, the right of trial by jury shall be preserved, and no fact tried by a jury, shall be otherwise re-examined in any Court of the United States, than according to the rules of the common law."
By its use in the ammendment, we know the "dollar" had a common accepted meaning well before the 7TH was passed - well before any signifigant American coinage could have occured.
So a "dollar" is what the term meant at the time the &th was drafted - and that meaning was universally understood to be an approximately 1 ounce coin of 90% or purer silver. While the word "dollar" has German origins, the most common "dollar" in use in the US at the time was the spanish "real". In fact, some reals were marked like a round pizza, so that "change" could be made by cutting it up into halves, quarters, and eights - with either a sharp knife or a hatchet. This practice gave us the "half dollar", quarter, "2 bits, 4 bits, 6 bits, a dollar", and the term 'piece of eight". Also the term, "to break a dollar".