Buffalo Nickel Key Dates for Serious Collectors

A Buffalo nickel can look modest at first glance: copper-nickel, five cents, and often worn nearly smooth from decades of circulation. Yet the series contains some of the most challenging regular-issue coins in 20th-century United States numismatics. Knowing the Buffalo nickel key dates is what separates a basic date-and-mint set from a carefully assembled collection with real scarcity, condition rarity, and variety appeal.

The Buffalo nickel series was struck from 1913 through 1938. James Earle Fraser's celebrated design is unmistakable, but the coin's recessed lettering and exposed date created a practical problem. Dates wore away quickly. That means collectors must distinguish between a genuinely scarce issue and a common coin whose identifying details have simply disappeared.

Why Buffalo Nickel Key Dates Matter

A key date is not always the lowest-mintage coin, and a low mintage does not always make a coin difficult in every grade. Survival, circulation patterns, striking quality, and collector demand all matter. This is particularly true of Buffalo nickels, where many early San Francisco and Denver issues were heavily used in commerce and are elusive today with full, original detail.

For the collector building a circulated set, several coins are challenging but obtainable with patience. For the buyer pursuing Mint State coins with strong luster, original surfaces, and a complete horn on the buffalo, the same dates can become substantially scarcer. Certified examples help establish both authenticity and a consistent grade standard, especially when the value difference between a lightly circulated coin and a Mint State example is significant.

The mintmark is located on the reverse below the words FIVE CENTS. Philadelphia issues carry no mintmark. Denver coins show a small D, while San Francisco coins show an S. On worn pieces, that small area deserves close inspection before any buying decision.

Core Buffalo Nickel Key Dates

The dates below are the issues most collectors encounter when discussing the central keys and semi-keys of a regular Buffalo nickel set. Market value depends heavily on grade, surface quality, certification, and whether a coin has been cleaned, altered, or damaged.

| Date and Mint | Collector Significance |
| --- | --- |
| 1913-S Type 2 | A major first-year key with the revised reverse design and a low mintage. |
| 1913-D Type 2 | Scarce and widely collected as part of the essential Type 2 issues. |
| 1914-D | A tough early Denver issue, especially with pleasing original surfaces. |
| 1915-S | A lower-mintage San Francisco issue with strong set-builder demand. |
| 1918/7-D | One of the series' most important overdates and a recognized major variety. |
| 1919-S | Difficult in attractive condition and often weakly struck. |
| 1921-S | A classic low-mintage key date and a major obstacle in the series. |
| 1924-S | Scarce in all but the lowest grades and especially difficult in Mint State. |
| 1926-S | A well-known condition rarity, often softly struck at the mint. |
| 1927-S | The lowest regular-issue mintage in the series, with strong collector demand. |
| 1937-D 3-Legged | A famous die-polishing variety, collected separately from regular issues. |

The 1913 Type 2 Issues

Buffalo nickels began with the 1913 Type 1 reverse, which places the buffalo on a raised mound. The reverse was modified later that year, placing the denomination in a recessed area below the animal. This is the Type 2 design used for the balance of the series.

The 1913-D Type 2 and 1913-S Type 2 are both essential pieces for a complete date-and-mint collection. The 1913-S Type 2 is generally regarded as the more important of the two. On each coin, confirm both the Type 2 reverse and the correct mintmark. A worn 1913 can be deceptively difficult to attribute if the reverse is poorly defined.

The 1921-S and Early San Francisco Issues

The 1921-S is one of the best-known keys because of its low original mintage and limited surviving population. It is a coin that deserves patience. Many available examples have heavy wear, porous surfaces, scratches, old cleaning, or weak detail. A problem-free certified example with natural color can command a meaningful premium over an otherwise similar coin with surface issues.

The 1915-S, 1919-S, 1924-S, 1925-S, 1926-S, and 1927-S demonstrate why mintage figures alone are not enough. San Francisco Buffalo nickels often show weak strikes, particularly on the high points of the obverse and the buffalo's head, horn, and tail. A sharply struck, original 1926-S in high grade is a very different coin from a typical softly struck example, even if both carry the same numeric grade.

The 1918/7-D Overdate and 1937-D 3-Legged

Two varieties belong in any serious discussion of the series. The 1918/7-D overdate resulted when a 1917 date was repunched and reworked into a die intended for 1918. The underlying 7 is visible with proper magnification in the date area. Because altered-date coins exist, certification by PCGS or NGC is especially useful for buyers who are not already experienced variety specialists.

The 1937-D 3-Legged Buffalo is another major variety. Excessive die polishing removed much of the buffalo's front leg, creating the distinctive appearance. Genuine examples retain diagnostic details beyond the missing leg, including the condition of the nearby ground line and other die characteristics. A coin that merely has a weak or damaged leg is not automatically the recognized variety.

Grade, Strike, and Surface Quality Change the Equation

Buffalo nickels reward careful examination. Two coins with the same date, mintmark, and numerical grade can have dramatically different eye appeal and market desirability. Original nickel-gray surfaces, even wear, and clearly readable legends are generally preferable to bright, stripped-looking coins that may have been cleaned.

Strike is equally important. The bison's horn is a commonly referenced feature, but it should not be judged in isolation. Examine the hair above the eye, the tail, the shoulder, and the reverse lettering. On a weakly struck San Francisco issue, missing horn detail may be a strike characteristic rather than wear. On a circulated piece, wear and strike often overlap, making experienced grading more valuable.

Be cautious with coins marketed as "full horn" or "sharp strike" without clear supporting photos or certification. Those descriptions can be useful, but they are not substitutes for looking at the actual coin. For higher-value pieces, the grading service, numerical grade, variety attribution, and certification number should all be documented and verifiable.

How to Buy Key Dates With Confidence

Start by deciding what kind of set you are building. A collector seeking a matched circulated album may prefer wholesome Very Fine to Extremely Fine examples with clear dates and attractive natural surfaces. A registry-oriented buyer may prioritize certified Mint State coins, strike quality, and population scarcity. Neither approach is better. The right choice depends on budget, collecting goals, and how much emphasis you place on condition rarity.

Avoid buying a key date solely because it is cheap. A bargain price can reflect cleaning, corrosion, tooling, added mintmarks, environmental damage, or a misattributed variety. These issues are especially relevant for 1918/7-D and 1937-D 3-Legged nickels, where authenticity is central to value.

For a significant purchase, ask for the complete identification: date, mintmark, variety where applicable, grading service, grade, and certification number. High-quality images should show both sides of the coin and reveal its actual surfaces rather than hiding them with excessive lighting or editing. This level of documentation gives collectors a sound basis for comparison and helps preserve confidence when the time comes to upgrade or sell.

A strong Buffalo nickel collection does not have to begin with the most expensive coin. Start with an honest, correctly identified piece that fits your standard, then let the series teach you what sharp strike, original surface, and true scarcity look like in hand. The right key date is not merely the one that fills a hole in an album - it is the coin you will still be pleased to own after studying it closely.