OCTOBER 8
1942•Wartime Silver Jefferson Nickel
2020•Final ATB Five-Coin Circulating Set
Philadelphia Begins Striking America’s Wartime Silver Jefferson Nickels
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On October 8, 1942, the Philadelphia Mint began producing a radically altered Jefferson five-cent coin made from copper, silver, and manganese instead of the familiar copper-nickel alloy. The change conserved nickel for the nation’s rapidly expanding World War II military effort and created one of the easiest wartime U.S. coin types to recognize today.
The new coin contained 35 percent silver, 56 percent copper, and 9 percent manganese. It also carried an enormous mint mark above Monticello on the reverse—a feature deliberately added so the emergency alloy could be identified and withdrawn after the war.
For Philadelphia, that oversized letter was a numismatic first. The 1942-P wartime nickel became the first regular U.S. coin to bear a P mint mark.
America Needed Nickel for War
The United States had entered World War II after the attack on Pearl Harbor in December 1941.
Mobilization transformed the economy.
Metals that had been routine ingredients in consumer products suddenly became strategic materials needed for weapons, armor, aircraft, engines, communications equipment, and countless other military uses.
Nickel was one of them.
Yet every Jefferson five-cent coin then being struck contained 25 percent nickel.
The Jefferson nickel had been introduced only a few years earlier, in 1938.
Felix Schlag’s design replaced the long-running Buffalo nickel.
The obverse showed Thomas Jefferson, while the reverse featured his Virginia home, Monticello.
The coin used the traditional five-cent composition of 75 percent copper and 25 percent nickel.
That alloy was durable and familiar—but by 1942, one of its ingredients had become too valuable to consume unnecessarily.
Congress Authorizes a Change
Congress responded with legislation approved on March 27, 1942.
The law allowed the five-cent coin’s composition to be changed during the wartime emergency.
It gave the Treasury flexibility to use an alternative alloy that would conserve nickel while still producing a coin suitable for commerce and vending machines.
The challenge was more difficult than simply finding a cheap metal mixture.
A replacement had to behave enough like the existing nickel to function in the nation’s coin-operated equipment.
By the 1940s, coin-operated machines were an important part of American commerce.
Machines could reject slugs and foreign coins by measuring characteristics such as size, weight, and electrical properties.
If the Mint introduced a five-cent piece that vending mechanisms rejected, the composition change could create a nationwide commercial headache.
Researchers therefore had to develop an alloy that conserved strategic nickel without making the coin mechanically incompatible with existing equipment.
The final wartime composition was 56 percent copper, 35 percent silver, and 9 percent manganese.
The presence of silver is why collectors commonly call the coins “silver war nickels.”
They are not mostly silver, and they are far below the 90 percent silver composition used by U.S. dimes, quarters, and half dollars of the era.
Nevertheless, every wartime nickel contains a meaningful amount of precious metal—about 0.0563 troy ounce of silver.
Despite the composition change, the wartime nickel retained the familiar five-cent denomination and physical format.
Its diameter remained about 21.2 millimeters and its standard weight 5 grams.
To an ordinary user, the coin still needed to behave like a nickel.
That continuity helped the emergency alloy enter circulation without requiring Americans or coin-operated industries to adapt to a completely new denomination.
October 8 at Philadelphia
Numismatic references documenting the wartime nickel transition identify October 8, 1942 as the beginning of production of the new silver-alloy Jefferson nickels at the Philadelphia Mint.
This did not mean every 1942 nickel used the wartime alloy.
Philadelphia and Denver had already struck large quantities of normal copper-nickel Jefferson nickels earlier in the year.
The composition change therefore created two fundamentally different 1942 nickel types.
That split makes 1942 especially interesting for collectors.
A 1942 Jefferson nickel cannot be identified as a wartime silver coin by date alone.
Some 1942 nickels are ordinary 75-percent-copper, 25-percent-nickel coins.
Others use the wartime 35-percent-silver alloy.
Fortunately, the Mint created an unmistakable visual marker.
On wartime nickels, a large mint mark appears above Monticello’s dome on the reverse.
This is dramatically different from the small mint marks collectors were accustomed to seeing on U.S. coins.
The location and size were intentional.
The government wanted the altered-alloy coins to be easy to identify after the emergency ended so they could potentially be removed from circulation.
The result became one of the most collector-friendly diagnostics in American coinage.
The Philadelphia Mint historically did not place a mint mark on most of its coins.
A missing mint mark ordinarily meant Philadelphia.
The wartime nickel changed that convention.
The 1942-P silver Jefferson nickel became the first U.S. coin struck for regular issue to display the letter P as Philadelphia’s mint mark.
The enormous P above Monticello makes the first appearance impossible to miss.
San Francisco and Denver
The wartime alloy was also used at San Francisco and, beginning in 1943, Denver.
Those coins carried equally prominent S and D mint marks above Monticello.
The full wartime silver-nickel series therefore includes large P, D, and S marks.
The system remained in use through the end of the emergency composition in 1945.
One detail often confuses beginning collectors.
Denver struck 1942 Jefferson nickels, but its 1942 production used the normal copper-nickel composition.
There is no regular 1942-D wartime silver nickel.
Denver’s large-mint-mark silver issues begin in 1943.
For 1942, the wartime silver type is found from Philadelphia and San Francisco.
The Philadelphia Mint struck 57,873,000 wartime silver nickels dated 1942.
That is a substantial mintage, which is one reason ordinary circulated examples remain obtainable today.
But availability should not obscure their historical importance.
Each surviving piece is a small artifact of the federal government’s effort to redirect strategic materials toward war production.
San Francisco produced 32,900,000 wartime nickels dated 1942-S.
Together, Philadelphia and San Francisco established the new alloy and large-mint-mark format before the calendar year ended.
In 1943, wartime nickel production expanded to all three active mints producing the denomination.
Millions upon millions entered daily commerce.
Using silver in a five-cent coin may seem surprising.
But wartime economics are not governed solely by the peacetime value hierarchy of metals.
Nickel had strategic industrial importance, while silver existed in substantial government stocks and could serve as part of an alloy meeting the technical requirements of the denomination.
The Treasury was effectively substituting a precious metal for a strategically critical industrial metal.
That reversal makes the war nickel one of the most counterintuitive coins in U.S. history.
The Manganese Component
Manganese made up 9 percent of the alloy.
Its presence helped produce the electrical and mechanical characteristics required for the replacement coin.
The unusual three-metal combination was created for a very specific wartime purpose rather than for beauty or intrinsic value.
In circulation, however, the alloy often aged differently from ordinary copper-nickel Jeffersons.
Many war nickels develop gray, dark, or otherwise distinctive toning.
The emergency did not require a new portrait or reverse design.
Felix Schlag’s Jefferson and Monticello remained.
Schlag had won the 1938 competition to design the new five-cent coin.
His original reverse depiction of Monticello was modified before production, but the basic Jefferson-and-Monticello pairing became one of the longest-running design combinations in modern American coinage.
The wartime alloy therefore altered the substance of the coin more dramatically than its artwork.
The reverse is especially important because the wartime identifier sits directly above Monticello.
The building was Jefferson’s home near Charlottesville, Virginia, and a deeply personal architectural project.
On ordinary Jefferson nickels, the area above the dome is visually open.
On 1942–1945 silver issues, the giant mint mark occupies that space and immediately transforms the appearance of the reverse.
War nickels were not intended as collector pieces or silver investments.
They were everyday money.
Americans spent them in stores, fed them into vending machines, and received them in change while the nation fought a global war.
Their precious-metal content did not prevent normal circulation because the denomination’s face value and wartime monetary environment kept them functioning as five-cent pieces.
Only later did their silver content become a major reason to save them.
1943–1945 Production
The silver alloy continued through 1943, 1944, and 1945.
All three mints—Philadelphia, Denver, and San Francisco—participated during those years.
The series produced several widely collected varieties, including doubled dies and repunched or unusual mint-mark varieties.
But even a common worn example retains the central historical feature: it was produced from an emergency alloy created because of World War II.
After the war, the five-cent coin returned to its familiar copper-nickel composition.
The oversized mint mark above Monticello disappeared with the wartime alloy.
Beginning in 1946, Jefferson nickels again used 75 percent copper and 25 percent nickel.
The emergency experiment had lasted only a few years, leaving a clearly bounded 1942–1945 subtype within the much longer Jefferson nickel series.
Today, worn war nickels often trade based partly on their silver content.
Because each contains about 0.0563 troy ounce of silver, a group of them has measurable bullion value independent of collector grade.
At sufficiently high silver prices, the metal value can substantially exceed the five-cent denomination.
That has encouraged generations of collectors and bullion buyers to pull wartime nickels from circulation whenever they encounter them.
The United States changed several coin compositions during World War II.
The 1943 cent famously replaced copper with zinc-coated steel to conserve copper.
Experimental cents in other materials were tested.
But the wartime nickel is especially easy to identify because the Mint intentionally marked it for future recognition.
A glance above Monticello tells the story.
Philadelphia’s wartime P also began a much larger mint-mark story.
For decades afterward, Philadelphia still omitted the P from many denominations.
But the precedent had been established.
Modern U.S. coinage now routinely uses P to identify Philadelphia on numerous denominations and numismatic products.
The first regular coin to do so was not created for branding or collector convenience—it was created to identify an emergency wartime alloy.
A Coin Designed to Be Removed
The large mint mark reveals another unusual aspect of the program.
The government expected that the silver-alloy nickels might eventually be identified and withdrawn after the war.
That plan was never carried out comprehensively.
Instead, war nickels continued circulating alongside later copper-nickel pieces for years.
Collectors gradually removed many, while others simply disappeared through normal attrition.
The identification system remained useful even though the envisioned mass withdrawal did not occur.
Large military objects dominate popular memories of World War II: aircraft, ships, tanks, rifles, and factories.
But mobilization reached into ordinary pocket change.
The composition of a five-cent coin became a matter of national resource policy.
That is what gives the war nickel unusual historical power.
It shows how deeply wartime priorities penetrated civilian life.
October 8, 1942 marks the beginning of Philadelphia production of one of America’s most distinctive emergency coins.
The Jefferson nickel still looked familiar, still weighed five grams, and still bought five cents’ worth of goods.
But underneath the design, its metal had changed dramatically.
Nickel needed for war had been removed and replaced by a 56-percent-copper, 35-percent-silver, 9-percent-manganese alloy.
Above Monticello appeared a giant P—the first Philadelphia mint mark on a regular U.S. coin.
For collectors today, the coin is easy to spot. For Americans in 1942, it was a tiny piece of a much larger national transformation: even the nickel in their pockets had gone to war.
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