How to Identify the Battle of Antietam Half Dollar
A collector's checklist for confirming a 1937 Antietam half dollar — the Lee and McClellan busts, Burnside Bridge reverse, silver specs, and authentication cautions.
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Start with the obverse portraits and lettering. A genuine Battle of Antietam Half Dollar shows two overlapping right-facing bearded busts — Generals Lee and McClellan — together with wording naming the coin. This jugate double-general portrait is the fastest way to separate it from the Walking Liberty half dollar in circulation the same year, which shows a full striding Liberty figure rather than portrait busts.
Turn the coin over to confirm the reverse. It should depict Burnside Bridge, a low multi-arch stone bridge over a creek, with lettering referencing the Battle of Antietam and the anniversary dates 1862 and 1937. This specific bridge scene, not a national eagle or circulating design, is a strong confirming detail.
Verify the physical specifications. The coin is a standard half dollar: roughly 30.6 mm in diameter, about 12.5 grams, struck in 90% silver with a reeded edge. A calibrated scale and calipers are the best tools here; a piece that is off in weight, diameter, or edge reeding for a silver half dollar is a warning sign.
Expect no mint mark. Every genuine example was struck at Philadelphia in 1937, so the absence of a mint mark is normal. Any Antietam half dollar bearing a mint mark, or a date other than 1937, should be treated as suspect.
Be cautious with authentication, since low-mintage commemoratives are targets for counterfeits and for altered or cleaned surfaces. Watch for mushy or doubled lettering, incorrect weight, an unnatural color that does not match 90% silver, or signs of harsh cleaning that reduce value. For any higher-value purchase, rely on reputable dealers and third-party grading (PCGS, NGC) rather than eye appeal alone.
Frequently asked questions
How can I distinguish it from an ordinary 1937 half dollar?
The commemorative shows two general portrait busts on the obverse and Burnside Bridge on the reverse, not the Walking Liberty design used for circulation. Those Antietam-specific images are unlike any circulating half dollar of the era.
Who are the two figures on the obverse?
They are Robert E. Lee and George B. McClellan, the Confederate and Union commanders at Antietam, shown as overlapping right-facing busts. The bearded double portrait is a key identifier.
What should a genuine example weigh and measure?
About 12.5 grams and roughly 30.6 mm in diameter, in 90% silver with a reeded edge. Figures that don't match those of a standard silver half dollar are a counterfeit warning sign.
Should the coin have a mint mark?
No. All were struck at Philadelphia in 1937 with no mint mark. A mint mark, or any date other than 1937, indicates a problem and warrants caution.