1966 Kennedy Half Dollar, 40% Silver Clad
Coin/Bullion · United States Mint (Philadelphia or Denver); Chief Engravers Gilroy Roberts (obverse) and Frank Gasparro (reverse)
Pattern: Kennedy Half Dollar, 1964-Present
Type
Coin/Bullion
Maker
United States Mint (Philadelphia or Denver); Chief Engravers Gilroy Roberts (obverse) and Frank Gasparro (reverse)
Material
40% Silver Clad (Ag 40%, Cu 60%). The composition consists of two outer layers of 80% silver/20% copper bonded to an inner core of 20.9% silver/79.1% copper.
Dimensions
Diameter: 30.6mm; Mass: 11.50 grams; Silver Content: 0.1479 troy oz of pure silver.
Description
Originally introduced in 1964 as a tribute to the assassinated President John F. Kennedy, this 1966 specimen represents the second iteration of the metal composition. While other US denominations moved to non-precious copper-nickel in 1965, the Kennedy Half Dollar maintained a 40% silver content until 1970. It features a dignified left-facing bust of Kennedy with strong, sharp hair details.
Key Features
Transitionary silver content (40%); Gilroy Roberts' initials (GR) on the truncation of the neck; lack of a mint mark.
Material & Composition
40% Silver Clad (Ag 40%, Cu 60%). The composition consists of two outer layers of 80% silver/20% copper bonded to an inner core of 20.9% silver/79.1% copper.
Finish & Decoration
Uncirculated business strike finish featuring the profil portrait of John F. Kennedy on the obverse and the Presidential Seal on the reverse. Includes raised edge lettering and reeded edge.
Hallmarks & Stamps
Stamped 'LIBERTY' and 'IN GOD WE TRUST' with date '1966'. Lack of mint mark on this year identifies it as a product of the Philadelphia, Denver, or San Francisco mints (as mint marks were suspended from 1965-1967).
Construction Details
Machine-struck via high-pressure coinage press on a multi-layered 'clad' planchet (blank).
Functional Features
Reeded edge intended to prevent fraudulent shaving of the metal; legal tender currency.
Handle & Grip Details
None; handheld numismatic/currency object.
Craftsmanship Details
Quality machine striking with die-sink craftsmanship; the 1966 strike is known for having slightly better detail than the 1965 predecessors due to die hardening improvements.
Authentication Indicators
Correct date/font typography; specific '1966' strike characteristics; authentic reeding; silver luster present despite tarnish. No copper 'sandwich' line seen on the edge like 1971+ versions.
Origin & Manufacturing
United States of America; Philadelphia/Denver Mint facilities.
Era & Period
Modern Era / Cold War transition; minted during the transition from 90% silver coinage to base metal clad coinage.
Age Estimate
Dated 1966; approximately 58 years old.
Cultural Significance
A symbol of American mourning and mid-century political identity. The coin was so popular as a souvenir that it rarely circulated in actual trade, leading to the eventual decline of the half-dollar's utility in commerce.
Condition Notes
Very Good to Fine; visible surface tarnish and light yellowing consistent with oxidation of silver-copper alloys. Significant contact marks (bag marks) visible in the fields and high points of Kennedy's cheek and hair.
Value Estimate
$4.00 - $10.00 USD depending on current silver spot prices and buyer interest. Higher for MS65+ grades.
Care & Maintenance
Do not clean or polish with abrasives as this destroys numismatic value. Store in an acid-free PVC-free flip or capsule to prevent further tarnish.
Similar Pieces
1964 Kennedy Half Dollar (90% silver); 1971-Present Kennedy Half Dollar (Copper-Nickel Clad); Franklin Half Dollar.
Interesting Facts
The Kennedy Half Dollar was authorized by Congress just over a month after the President's death. In 1966, despite the silver shortage, over 108 million of these were minted.