Non common? Please rephrase question. Many "Silver Dollars" were struck in the 1800's.
Only one type of silver dollar exist dated 1923 and it's a PEACE dollar. No such thing as a flowing hair or non-flowing hair.
Eisenhower was on the last silver dollar. The US mint is now producing a series of dollar coins that will eventually picture every non-living ex-president. None of the coins contain any silver.
The figure portrayed on the obverse of the Morgan silver dollar is Lady Liberty who is a non existant person used to represent Liberty.
All Dollar coins issued for circulation from 1971 to date contain no silver All Dollar coins issued from 1794- 1935 are 90% silver. In the years of 1936-1970 no one dollar coins were struck.
Silver and copper are not magnetic materials so no American 90% silver coin will stick to a magnet.
Most non-collectors use the generic term 'Silver Dollar" for any one dollar coin. Only dollar coins from 1971 to date have real people on them. Older real silver dollars from 1794 to 1935 have different stylized portraits of Miss Liberty. Post a new question with a date
Silver is a transition metal. Helium is a non metal and a noble gas. They dont have any similar or common properties.
Two types of silver dollars were issued in 1921, a Morgan dollar and a Peace dollar. The easy way to tell the difference is on the reverse (back) of a Peace dollar the eagles wings are folded, on the Morgan they are spread out. Post a new question after you find out which one you have.
The biggest difference is Peace dollars exist and Liberty dollars don't. A very common mistake non-collectors or amateurs make with US silver dollars is they think because the word LIBERTY is on the obverse of a Peace dollar (or other coins) it's called a liberty dollar. No US coin is referred to as just a "Liberty" coin. Also this comes up with Morgan dollars, but with the national motto E PLURIBUS UNUM because it's on the front of the coin.
No because they contain no magnetic materials.
Trade dollars were US coins made in silver to trade in the far East. However, your coin, if it is an 1884 Trade Dollar, it is counterfeit. There were only 10 examples minted that year, all of them are known. So, when it comes to value, the only value your coin can have is if it is minted in real silver, if it is minted in real silver, it is worth however much silver is in your coin. If it is silver plated lead, or silver plated copper, or non-silver alloy like "nickel silver" your coin is essentially worthless.
It is possible, but it depends on which set your coin was in. If your coin is in a standard proof set, it contains no silver. On the other hand, if your coin is in a 3 coin silver proof set with the dollar, half and quarter it is 40% silver. If your coin is loose, you should be able to look at the edge, if it is silver it will usually look more white compared to the non-silver version which will have a stripe of bright red (or sometimes pink) copper.