Assuming that the coin is slabbed and the 66 grade is from one of the major certifying agencies, PCGS shows values in excess of $10,000 depending on the coin's mint mark. I
In any case you will need 3 or 4 competing appraisals because slight variations mean major price differences at the stratospheric level of an MS-66 coin. It depends what kind of gold coin it is. There are quarter eagles, half eagles, eagles, and double eagles.
it depends what the year is and what the grade of the coin is.
4.5 million It is not worth 4.5 million, a-hole. . .
A Liberty Head $20 gold coin with a grade of very fine (VF) is worth about $7,200.
Circulated coins have retail values of $166.00-$300.00 depending on the grade of the coin.
In the grade range of MS-60 to MS-63 retail values are $550.00 to $2,000.00 depending on the actual grade of the coin.
After all of the math is done the 1901 half eagle gold coin is about 21 carat gold. They consist of 90% gold and 10% copper.
Regardless of mint mark, between $475 and $550 for its gold content. Worn coins will be at the lower end of that range.
Assuming the coin is circulated and has no mintmark, retail values are $324.00-$444.00 depending on the grade.
For coin collectors it would depend on the grade (condition) of the coin. In good condition its worth about $90. The better the condition the more its worth. As a gold bullion coin as of 5/25/2009 about $45 USD.
Miss Liberty is on all 4 of the US gold denominations dated 1901.
Assuming the coin is circulated and has no "S" mint mark retail value are $312.00-$420.00 depending on the grade of the coin.
If the coin is actually made from gold, it will be worth whatever the gold content is worth. If it is a coin of gold appearance, it will maybe be worth whatever you paid for it.