In 1973, with silver prices on the rise, the U.S. Mint began striking copper-nickel clad half dollars and discontinued production of silver half dollars. Silver Eagles struck in 1986 have a proof mintage of 1,006,354.
The reverse design was updated slightly but remained fundamentally unchanged as the previous design by Gilroy Roberts.
1794 to 1804 Flowing Hair - These Half Dollars are worth $150,000 - $450,000
1807- 1839 Capped Bust - are worth around $1,500 - $25,000
1838 Seated Liberty - is worth around $100 - $200,000
1838- 1853 Seated Liberty - is worth around $50 - $2,500
1853 Seated Liberty with Arrows - is worth around $1,500 - $25,000
1853-1891 Seated Liberty - is worth around $50- $2,500
1892 Barber Half Dollar - is worth around $50 - $150
1892- 1915 Barber - is worth around $20 - $5,000
1916- 1947 Walking Liberty - is worth around $15 - $3,500
1948- 1963 Franklin Half Dollar - is worth around $10 - $150
1964-1970 Kennedy (40%) - is worth around $10 - $120
1971/1974 Kennedy (40%) - is worth around $70 - $150
1971 Silver Proof Kennedy - is worth around $200 - $300
1976 S Proof Half Dollar - is worth around $200 - $300