Diagnostic Controls & Presets Jacqueline Kennedy Design Critique Variety
Diagnostic Forensic Readings
Forensic Attribution Diagnostic
Real-time metallurgical and die variety cross-examination verified against certified populations.
Technical Breakdown: Physics, Metallurgy & Die Diagnostics
Following the assassination of President John F. Kennedy on November 22, 1963, Congress authorized the Kennedy Half Dollar in record time. Mint Chief Engraver Gilroy Roberts prepared the obverse dies and struck trial proof coins in early 1964. However, when trial strikes were presented to First Lady Jacqueline Kennedy, she requested that the hair strands above Kennedy's ear be softened and less pronounced.
• Marker 1 (Obverse Hair): Prominent, heavily incuse wishbone-shaped pair of hair strands directly above the ear.
• Marker 2 (Obverse 'I' in LIBERTY): The lower left serif of the letter 'I' is completely missing/severed (on Type 2 regular hair, the serif is full and complete).
• Marker 3 (Reverse Star Ray): The star ray directly between the olive branch and shield lacks the lower ray extension found on Type 2 dies.
A tiny quantity (~12 to 15 specimens) of 1964 coins were struck with a distinctive smooth satin finish and razor-sharp rims. Struck without mintmarks and never released in regular proof sets, they are believed to have been struck experimentally for Mint Director Eva Adams.
Documented Benchmark Auction Records
The legendary Special Mint Set rarity. Displays flawless satin sandblast surfaces with knife-edge rims. One of fewer than 15 examples known to exist.
Ultra-rare Deep Cameo specimen of the Type 1 Accented Hair proof. Intense black-and-white contrast with pristine surfaces.
Choice Cameo proof displaying all three primary diagnostics: sharp wishbone hair strand, severed 'I' serif, and truncated reverse ray.
Frequently Asked Questions
What is the 1964 'Accented Hair' Kennedy Half Dollar?
The 'Accented Hair' variety is the original obverse design used for the first proof Kennedy half dollars in early 1964. Approximately 1% to 3% of the 1964 proof mintage was struck with these dies before First Lady Jacqueline Kennedy requested that the hair be softened, creating the scarce Type 1 variety.
What are the key diagnostics of an authentic Accented Hair Kennedy?
There are three primary diagnostics: (1) A sharp, bold wishbone-shaped lock of hair above JFK's ear; (2) The lower-left serif on the letter 'I' in 'LIBERTY' is completely missing/severed; and (3) On the reverse, the ray pointing between the shield and olive branch is shorter and lacks the bottom point.
What is the mysterious 1964 Special Mint Set (SMS) Kennedy?
The 1964 SMS Kennedy half dollar is an ultra-rare experimental strike characterized by a non-reflective satin sandblast finish, squared rims, and no mintmark. Only 12 to 15 specimens are known to exist, originating from the estate of former Mint Director Eva Adams, and they command over $100,000 at auction.
Were any Accented Hair Kennedy half dollars struck for circulation?
No. The Accented Hair variety exists exclusively in proof strikes produced at the Philadelphia Mint. All circulating business strikes feature the revised Type 2 regular hair design.
How many 1964 Accented Hair proofs were struck?
Numismatists estimate that between 40,000 and 100,000 Accented Hair proofs were produced out of the total 1964 proof mintage of 3,950,762 (roughly 1% to 2.5% of production).
What makes a 1964 Accented Hair worth thousands of dollars?
While standard brilliant Accented Hair proofs sell for $60 to $100, specimens possessing Deep Cameo (DCAM) or Ultra Cameo contrast in high grades (PR-67 to PR-68) are extremely rare because early proof dies were quickly polished, commanding between $3,000 and $19,000 at auction.
What is the silver composition of the 1964 Kennedy Half Dollar?
The 1964 Kennedy half dollar is 90% silver and 10% copper (weighing 12.50 grams and containing 0.36169 troy ounces of pure silver). From 1965 to 1970, the composition was reduced to 40% silver, and beginning in 1971, it became copper-nickel clad.