5,393,005 were minted and sold.
Because the coin is not a silver eagle, with a date 1902 the coin is a MORGAN dollar. The first Silver Eagle was made in 1986.
The obverse and reverse sides of the Walking Liberty half dollar were both designed by sculptor Adolph A. Weinman in 1916. The obverse began to be re-used in 1986 for the American Silver Eagle dollar and is currently being minted. The reverse of the American Silver Eagle dollar was designed by sculptor and engraver John M. Mercanti in 1986.
As of today about $18.50
American Silver Eagles were fist made in 1986, by the date (1943) you have a Liberty Walking Half dollar with a average value of $10.00
Modern Silver Eagles (1986 to date) contain One Ounce of pure silver.
A $1 Dollar Silver Eagle is .9993 silver & .0007 copper. yes.
Your coin is called a Morgan dollar. "American Eagle" coins are modern bullion pieces made since 1986 for collectors and investors; Morgan, Peace, and other standard-issue silver dollars were made for use in ordinary commerce. They were discontinued in 1935. Please see the question "What is the value of an 1880 US silver dollar?" for more information.
The silver Eagle bullion is worth one dollar in United States dollar. It was first released in the United States on November 24th 1986 and is the only dollar coin.
The coin is NOT a "Silver Eagle", it's a Peace dollar. Silver Eagles are 1 ounce bullion coins of pure silver, first made in 1986. A 1935 Peace dollar is 90% silver, most circulated coins are valued from $30.00-$40.00.
Modern American Eagle coins have their purity displayed right on the back of each piece. It's one ounce of 999 fine silver. Don't confuse modern eagle coins with older circulating silver coins that incorporate many of the same design elements. For those you have to know what date and denomination of coin you have.
1986?
It's a Morgan dollar, the first American eagle was struck in 1986. Check the back of the coin under the eagle to see if it has a mintmark, it can only be an O, S or CC, it may not have a mintmark but it makes a difference in value. There's more information at the Related Question.