The 1928-S Wheat Penny is worth anywhere from $1 in heavily worn condition to over $450 in high-grade uncirculated mint state. If you have found one of these vintage San Francisco minted coins in your change or an old jar, you are holding a piece of American history that carries a significant premium over its face value.

Condition	Estimated Value
Good (G-4)	$1.15 – $1.50
Fine (F-12)	$2.50 – $4.00
Extremely Fine (XF-40)	$10.00 – $18.00
Uncirculated (MS-63)	$65.00 – $110.00
Choice Uncirculated (MS-65 Red)	$450.00+

Identifying Your 1928-S Wheat Penny

The 1928-S Wheat Penny is easily identified by the small “S” mint mark located right below the date on the obverse (heads) side of the coin. This “S” signifies that the penny was produced at the San Francisco Mint. In 1928, the San Francisco Mint produced a relatively small number of pennies compared to the main Philadelphia Mint, making the “S” variant much more desirable to collectors.

When you find an old penny, the first thing you should do is use a top coin identifier app to confirm its authenticity and origin. This ensures you aren’t mistaking a common 1928 Philadelphia penny (which has no mint mark) for the more valuable San Francisco version.

The 1920s were a fascinating era for American currency, and the Wheat Penny design by Victor David Brenner remains one of the most iconic in history. Finding one of these nearly century-old coins in circulation is becoming increasingly rare, which is why even low-grade specimens maintain a value far above one cent. To get an instant valuation, many casual hunters turn to the CoinKnow app for a quick scan.

Understanding the 1928-S Penny Grading System

The value of your 1928-S Wheat Penny is almost entirely dependent on its grade. Professional numismatists use a 70-point scale to determine a coin’s condition. For an everyday person, this can be simplified into categories like Good, Fine, About Uncirculated, and Mint State.

A “Good” coin will be heavily worn, with the “wheat” stalks on the back appearing flat. A “Fine” coin will show some detail in Lincoln’s hair and the lines of the wheat ears. If you are lucky enough to find a coin that still looks shiny and red, you might be looking at a “Mint State” coin. These are the ones that fetch hundreds of dollars at auction.

The color of the copper also plays a vital role. Pennies are categorized as Brown (BN), Red-Brown (RB), or Red (RD). A “Red” coin is one that looks as fresh as the day it was minted, and these command the highest prices. You can check the current 1928-S RD penny market price to see how the color grade affects the final sale value for high-end specimens.

Grade Designation	Visual Description	Value Range
Brown (BN)	Dark chocolate color, most common for circulated coins.	$1 – $60
Red-Brown (RB)	Mix of original copper luster and oxidation.	$70 – $150
Red (RD)	Bright, original orange-red copper color.	$200 – $1,500+

Why the 1928-S Wheat Penny is Rare

While the total mintage of the 1928-S Wheat Penny was over 17 million units, this is actually quite low when compared to modern standards. For instance, the Philadelphia Mint produced over 134 million pennies that same year. Because fewer were made in San Francisco, supply is naturally lower, leading to higher prices.

Furthermore, 1928 was a year just before the Great Depression. During the economic hardships of the 1930s, many of these pennies remained in heavy circulation, causing them to wear down significantly. Finding a 1928-S in “Uncirculated” condition is a challenge because most people spent them out of necessity rather than saving them in collections.

If you suspect you have a high-grade coin, it is important to handle it only by the edges. Any fingerprint oils can damage the surface and lower the grade. Many collectors use the CoinKnow app to log their finds and track the rarities they discover while coin roll hunting or checking pocket change. Having detailed 1928-S Wheat Penny value guide information at your fingertips helps you decide if a coin is worth sending in for professional grading.

Common 1928-S Errors and Varieties

Errors are a great way for everyday Americans to turn a standard coin into a valuable treasure. While the 1928-S is not known for a massive “Doubled Die” like the famous 1955 penny, there are subtle errors that can add value. Look for things like “Lamination Errors,” where the copper surface seems to be peeling, or “Off-Center Strikes.”

Another thing to look for is the “Small S” vs. “Large S” mint mark variations. While not officially recognized as major varieties by all grading services, some collectors pay more for specific mint mark placements or sizes. These tiny details are often missed by the naked eye but can be spotted with a magnifying glass or a high-resolution coin app.

Error Type	What to Look For	Potential Value
Off-Center Strike	The image is shifted, leaving a crescent of blank metal.	$20 – $100+
Lamination Crack	Flaking or cracking on the coin’s surface.	$5 – $25
Die Chips	Small bumps of extra metal, often in letters or the date.	$2 – $10

Tips for Selling Your 1928-S Wheat Penny

If you decide to sell your 1928-S penny, you have several options. For common, circulated coins worth $1 to $5, local coin shops or online marketplaces like eBay are usually the best bet. You can bundle them with other Wheat Pennies to attract “lot” buyers.

However, if your coin is in exceptional condition (graded MS-63 or higher), you should consider professional grading services like PCGS or NGC. A certified coin is much easier to sell for a high price because the buyer has a guarantee of its authenticity and quality. High-end auctions are the best venue for coins worth hundreds or thousands of dollars.

Before heading to a dealer, it’s a good idea to use CoinKnow to get an estimate of what you should expect. This prevents you from selling a valuable “Red” mint state penny for the price of a common brown one. Knowledge is power when it comes to coin collecting!

Sales Channel	Best For	Pros/Cons
Local Coin Shop	Quick cash, common grades.	Fast, but may offer lower wholesale prices.
Online Auctions	Mid-range coins ($10 – $100).	Reaches many buyers, but involves fees and shipping.
Heritage/Stacks Bowers	High-end, certified rarities.	Highest prices, but long wait times.

FAQ

Q: Where is the mint mark on a 1928-S Wheat Penny?

A: The mint mark is found on the obverse (heads) side of the coin. Look directly underneath the date “1928.” If you see a small “S,” it was minted in San