Yes, all US silver dollars from 1840 to 1935 are struck in 90% silver & 10% copper, this includes the Morgan series.
Yes. All Morgan silver dollars were made with 90% silver and 10% copper.
Please post a new question. The first Morgan dollar was minted in 1878. No silver dollars at all were made in 1835.
Most common Morgan silver dollars are worth around 20 to 40 dollars in lower circulated condition. See the link below for a price guide and then you can see common Morgan silver dollars.
A 1926 Morgan dollar would be an incredible coin because the last dollars with the Morgan design were made in 1921. All dollars dated 1926 are Peace dollars. See the related question for more information.
The ASW (Actual Silver Weight) of the coin is .77344oz of pure silver. All Morgan an Peace dollars have this amount of silver.
All MORGAN silver dollars weigh 26.73 grams.
An 1840 Morgan dollar doesn't exist. All 1840 dollars carry the Seated Liberty design. Morgan dollars were made from 1878 to 1904 and again in 1921. And in any case George Morgan wasn't even born in 1840.
An unworn Morgan dollar has a nominal weight of 26.7 grams. All Morgan dollars (as well as Peace dollars) were struck in an alloy of 90% silver and 10% copper, so they contain about 24.1 gm of pure silver, or about 0.77 troy ounces.
A Morgan Silver dollar is 38.1 mm in diameter and 26.7 gm in weight.
No such coin exists. All 1923 dated silver dollars are Peace Dollars, the last Morgan Dollars were minted in 1921. It is a common date for Peace Dollars and worth about $25 in average circulated condition.
All U.S. silver dollars minted 1935 or earlier are 90% silver with 10% copper. Then all circulating Eisenhower dollars in the 1970s were made of the same copper/nickel blend as dimes, quarters and halves. Some Ike dollars were 40% silver, but only those sold in special collector sets, all from the San Francisco Mint.
Technically no, Trade dollars were issued in 1878, but these coins were not intended for domestic use. And Proof Trade dollars were struck from 1879-1885 but were not released for general export. All Morgan dollars from 1878 to 1904 were struck and released for circulation.