a date
Mint marks were placed in different locations on each different coin series.
They never have. If your coin has a hole and is a US coin then someone drilled it in. It was not done at a US mint.
The first US dollar coin was made in 1794.
The typical value of an 1850 Braided Hair Large Cent is between $17 and $261 depending on condition. View the source link below to view all of the values for each grade of the coin.
...Of what US coin? There have been several US coins intended for circulation ranging from half a cent to $20.
Mint marks were placed in different locations on each different coin series.
They don't have a state coin. No state mints money. The US government did put out a series of quarters representing each state.
Each coin would have to be seen and graded for a value. The set was not produced by the U.S. Mint.
Except for cents and dollars, modern coins are 75% copper.
An official "US Mint Set" is a Uncirculated coin set. They have uncirculated examples of every denomination issued from each mint for the year of issue. They are the same.
Each coin has its own value. To determine the worth of any individual coin the year, mintmark and condition would have to be known.
A two cent US coin is larger in size than a ten cent US coin.
The proof and uncirculated versions of this coin are both valued at $15.00 each.
Sacagawea is on the US $1 coin.
They never have. If your coin has a hole and is a US coin then someone drilled it in. It was not done at a US mint.
Many of the coins are valued at a price close to $10 each. The amount for each coin will vary depending upon the condition that it is in.
US mint sets 1958 and before are double sets so a 1957 will have 2 of each coin with a face value of $3.64. This was done so both sides of each coin from each mint could be displayed in the cardboard holders that came with the set.