The Goloid metric dollar was minted by the U.S. Mint in Philadelphia as a pattern coin, but it was not a typical silver dollar.
Goloid was an alloy that consisted of gold, silver and copper. The pattern coins were produced with varying amounts of gold and silver in the coins and the alloy was patented by Dr. William Wheeler Hubbell of Philadelphia. The idea was to replace all our silver coinage with goloid coins.
But for various reasons, the goloid coins were never approved and the idea was dropped.
An 1879 "Silver Dollar" is a Morgan dollar.
A couple of Grand (U.S) if real A couple Dollars (U.S) if fake
1879 would make it a "Morgan" dollar.
The 1879 Morgan dollar has a diameter of 38.1mm, thickness is 2.4mm.
77 trillion dollars
About $30.
$558.00
george wahington
It is made of 90% silver and 10% copper.
Peace dollars were made from 1921 to 1935. An 1879 silver dollar is called a Morgan dollar after its designer George T. Morgan. There's more information at the Related Question
$558.00
No platinum coins were struck in 1879, the first ones were in 1997