Please take another look at your coin. There were no 1975-dated half dollars; all dual-dated coins from the Bicentennial celebrations carried the dates 1776-1976 even if they were struck in 1975.
There's more information at the Related Question.
A U.S. fifty cent piece dated 1961 is a Franklin half dollar. The coin is not rare, if it shows any wear the value is about $12.00 just for the silver.
About $2.00
Value of 1986 fifty cent piece
....50 cents. Half dollars dated 1971 and later that aren't in mint packaging are common and not silver and worth no more than face value.
The value of a 1943 fifty cent piece is determined by it condition. However they range anywhere between $9.00 all the way up to $50.00.
The US did not mint any half dollars dated 1800.
50 cents?!?!
This coin is not rare. Unless it is a proof or uncirculated it is worth 50 cents. One that is uncirculated might bring around $1.50. Proof coins have the mintmark S.
A 1914 double eagle in circulated condition has retail values of $1,420.00-$1,890.00 depending on the grade of the coin
Yes, it is only worth face value.
In order to determine the exact value of a 1946 fifty cent piece, a couple different factors would need to be taken into consideration. Most importantly, the condition of the coin.
The coin's still in circulation and is only face value.