Kennedy half dollars are a favorite with collectors because they mix historical significance with a wide range of varieties and errors. This guide covers 11 rare types collectors look for, how to spot them, and best next steps if you find one.
11 Rare Kennedy Half Dollars to Watch
Below are 11 rare or highly desirable Kennedy Half Dollars. Each entry explains why collectors prize it and what signs to look for.
1. 1964 Proof Kennedy Half Dollar
1964 proofs are 90% silver and were the first Kennedy halves. High-grade proof examples (PR-65 and above) command collector interest for their silver content and early strike quality.
2. High-Grade 1964 Business Strikes
Business-strike 1964 halves were mass-produced, but a Gem MS-66 or higher 90% silver example is rare in circulation and desirable to collectors focused on condition.
3. 1965–1967 Special Mint Set (SMS) Kennedy Half Dollars
During 1965–1967 the Mint produced Special Mint Sets instead of proofs. Some SMS pieces are prooflike and are sought after when they display strong reflectivity and sharp detail.
4. 1965–1970 40% Silver Gem Uncirculated Kennedy Half Dollars
These contain 40% silver and are popular in high grades because they combine intrinsic metal value with collector demand. Look for coins with full luster and minimal wear.
5. Bicentennial 1776–1976 Kennedy Half Dollar Varieties
Bicentennial halves exist in many finishes and mintages. Certain mint errors and high-grade examples of the dual-date halves can be uncommon and desirable.
6. Deep Cameo and Prooflike Kennedy Half Dollars
Proof or prooflike coins with strong contrast between mirror fields and frosted devices (Deep Cameo) attract modern collectors. These are often graded to show cameo designation (DCAM).
7. Doubling and Doubled-Die Varieties
Doubling on the obverse or reverse — called doubled dies — can make a common date far more valuable. Check letters and digits for split or shadowed images.
8. Repunched Mint Marks and Overmint Marks
Repunched mint marks (RPMs) occur when mint marks were punched more than once. These small anomalies are collectible when clearly visible and properly documented.
9. Dramatic Error Coins: Off-Center, Clipped Planchets, and Brockages
Large off-center strikes, clipped planchets, and brockage errors are visually striking and often sought by error collectors. Value depends on degree of error and overall condition.
10. Broadstrikes and Planchet Mix-Ups
Broadstruck Kennedy halves or coins struck on the wrong planchet (e.g., clad on a silver planchet) are rare and can draw strong interest from specialists.
11. Patterns and Trial Strikes
Pattern coins and trial strikes produced in very small numbers are among the rarest. These pieces usually appear through auctions or institutional sales rather than circulation.
Kennedy half dollars were first struck in 1964 after President John F. Kennedy’s assassination. The 1964 issue is 90% silver, while coins dated 1965–1970 contain 40% silver.
How to Identify Rare Kennedy Half Dollars
Identification combines visual inspection, weight and dimension checks, and reference comparison. Use a loupe (10x), a scale accurate to 0.01 g, and a trusted reference or price guide.
- Look for doubling, repunched mint marks, and unusual strike placement.
- Check edges and thickness to spot wrong planchet strikes or broadstrikes.
- Compare toning and luster against known proofs and business strikes for authenticity.
Basic tests collectors use for Kennedy Half Dollars
Weigh the coin, measure diameter, and compare to official specifications. Silver-content coins will have a different feel and acoustic ring than clad pieces.
Where to Find and Preserve Rare Kennedy Half Dollars
Rare halves appear in coin rolls, estate sales, old collections, and online auctions. Dealers and coin shows also supply vetted material, though at a premium.
Preservation is critical. Keep coins in inert holders such as Mylar flips or coin capsules, and avoid PVC products. For high-value coins, consider third-party grading (PCGS, NGC) to certify rarity and grade.
- Store in a stable, low-humidity environment.
- Handle coins by the edge and use cotton gloves when practical.
- Document provenance and any certificates or former auction records.
Small Real-World Example or Case Study
A collector bought a small lot of mixed coins at a local estate sale and found a 1964 Kennedy Half in excellent condition inside an old album. After sending it to a third-party grading service the coin received a high proof grade, which confirmed its desirability to collectors specializing in early Kennedy issues.
The buyer sold the graded coin at auction and used the proceeds to buy reference books and a loupe. That single find paid for key collecting tools and started a focused series on early Kennedy halves.
Final Practical Tips for Collectors
Start by learning specifications and common varieties for Kennedy Half Dollars. Join local clubs or online forums to compare notes and verify rare finds.
When in doubt about a suspected rarity, consult a reputable dealer or submit the coin for professional grading. Proper authentication protects both buyers and sellers and maximizes long-term value.
With attention to detail and a little luck, any collector can find a rare Kennedy Half Dollar that becomes the centerpiece of their collection.