No it's not, the coin is 90% silver and 10% copper.
The link below has a picture of a peace dollar.
Peace dollars are 90% silver & 10% copper.
The Morgan Silver Dollar can range from $25 to $70, and the Peace Silver Dollar from $50 to $300.
that year they had two different types of silver dollars the Morgan Dollar and the Peace dollar
The last large dollar that was 90% silver was a 1935 Peace dollar.
If you mean a real silver dollar, such as a Morgan or peace dollar the thickness is 2.4mm
All Peace dollars contain .77344oz of pure silver.
90%
It looks the same as any other Peace dollar.
Peace dollars all have the same amount of silver in them .77344oz of pure silver.
The 1923 Peace Dollar contains 90% silver and 10% copper.
The amount of pure silver in the 1922 Peace dollar is .77344oz, all US silver one dollar coins from 1840 to 1935 have this much silver in them.