Although this is the first commemorative U.S. coin made, so many were released in to circulation values run from $16.00 to $28.00 depending on the grade. Average Mint State coins sell around $30.00 to $45.00.
The Columbian Exposition half dollars are dated 1892 & 1893, look at the coin again and post new question.
The Colombian half dollar is a commemorative coin from 1893 it can be worth a lot depending on its mint state.
Please post new question with the date of the coin.
The 1892-O half dollar is one of the more valuable half dollars. It's worth at least $200 and upwards of almost $800 depending on condition.
Although this is the first commemorative US half dollar coin made, so many were released in to circulation, values run from $16.00 to $29.00 depending on the grade. Mint State coins sell around $33.00 to $38.00.
These coins were issued in 1892 and 1893 rather than 1882-83. They were issued to honor the 500th anniversary of Columbus' voyage to America.Many of these coins were saved so they are common among collectors. A slightly worn coin of either year would retail for $8 to $10.
The Columbus half dollar was a commemorative coin celebrating the 400th anniversary of CC which took place in Chicago. It is also known as the Columbian exposition half dollar. This price varies from $200 to $650 in uncirculated grades to priceless (well over $10,000) in top proof grade where only 400 specimens were produced.
$35
half a dollar
Please check your coin again and post a new, separate question. There were no "exposition half dollars" minted in 1883. If you're referring to a Columbian Exposition half, these were minted in 1892 and 1893; there's more information at the Related Question.
Miss Liberty
The Barber Half Dollar was the only half dollar minted by the US Treasury from 1892 through 1915. This coin was followed by the Walking Liberty Half Dollar.