Susan B. Anthony (1979-81 and 1999), Sacajawea (2000-) and Presidential (2007-) dollar coins all weigh approximately 8.1 grams.
Despite the different pictures and metals the coins were designed to be the same size and weight so they could be used interchangeably, especially in vending machines and coin-counters.
1 gram
12 grams.
About 1 gram
The one euro coin weighs 7.5 grams, per regulation EC 975/98.
One silver (pre-1965) half dollar weighs 12.5 grams, so 20 weigh 250 grams.
1.672 grams
An 1857 Indian Head gold one dollar coin should weigh 1.672 grams.
The bicentennial dollar coin is still worth one dollar.
One dollar.
The bicentennial dollar coin is still worth one dollar.
One dollar.
What you presumably have is a James Buchanan presidential dollar coin. It was minted in 2010 and is worth one dollar.
One dollar.
One dollar.
One method to determine the authenticity is to weigh the coin. A genuine U.S. silver dollar should weigh 26.73 grams.
One dollar.
His first name was Millard, and the coin is worth one dollar.