United States, 1966 AD., Philadelphia mint, Half Dollar, KM 202a.

United States of America, Philadelphia mint, "Kennedy Half Dollar", engravers: Gilroy Roberts (obverse) and Frank Gasparro (rev.), 1966 AD.,
Half Dollar / 50 Cent (ø 30,6 mm / 11,32 g), 0.400 silver, 11,50 g. theor. mint weight, mintage 108.984.932 , axes medal alignment ↑↑ (0°), reeded edge,
Obv.: LIBERTY / IN GOD - WE TRUST / {RG} / 1966 , head of John Fitzgerald Kennedy facing left, dividing motto, engraver´s monogram at truncation, (possible mint mark and) date below.
Rev.: UNITED STATES OF AMERICA / E PLURIBUS UNUM / FG / HALF DOLLAR , Seal of the President of the United States, encircled with "UNITED STATES OF AMERICA" on the top and "HALF DOLLAR" on the bottom, an eagle at center, wings spread, engraver´s initials r. below.
KM 202a .

Year / Mint Mark / Mintage
1965 65,879,366
1965 SMS 2,360,000 Special Mint Set
1966 108.984.932
1966 SMS 2,261,583 Special Mint Set
1967 295,046,978
1967 SMS 18,633,440 Special Mint Set
1968 D 246,951,930
1968 S 3,041,506 Proof
1969 D 129,881,800
1969 S 2,934,631 Proof
1970 D 2,150,000 Mint Set only
1970 S 2,632,810 Proof

similar issues :
1964 (12.5 g. , 0.900 silver) KM 202
1971-1974 (11.34 g. , copper-nickel clad copper) KM 202b

Intended as a memorial to the assassinated President John F. Kennedy.
John Fitzgerald "Jack" Kennedy (May 29, 1917 – November 22, 1963), commonly referred to by his initials JFK, was an American politician who served as the 35th President of the United States from January 1961 until his assassination in November 1963. The Cuban Missile Crisis, The Bay of Pigs Invasion, the Nuclear Test Ban Treaty, the establishment of the Peace Corps, developments in the Space Race, the building of the Berlin Wall, the Civil Rights Movement, the "New Frontier" domestic program, and abolition of the federal death penalty in the District of Columbia all took place during his presidency. Kennedy also avoided any significant increase in the American presence in Vietnam, refusing to commit combat troops and keeping the level of others, mostly military advisors, to only 16,000, compared to the 536,000 troops committed by his successor, Lyndon Johnson, by 1968.

more on https://en.wikipedia.org/wiki/John_F._Kennedy , https://en.wikipedia.org/wiki/Kennedy_half_dollar , https://en.wikipedia.org/wiki/Seal_of_the_President_of_the_United_States