The Capped Bust Half Dime Returns at the Cornerstone of the Second Philadelphia Mint

An Independence Day Ceremony at Six in the Morning

July 4, 1829, was the fifty-third anniversary of American independence.

In Philadelphia, the day also marked a milestone in the history of the United States Mint. At approximately six o’clock that morning, officials assembled for the laying of the cornerstone of a new federal mint building at Chestnut and Juniper Streets.

The ceremony was led by Mint Director Samuel Moore. Other Mint personnel included Treasurer James Rush, Chief Coiner Adam Eckfeldt, Assayer Joseph Richardson, Melter and Refiner Joseph Cloud, Engraver William Kneass, and Clerk George Ehrenzeller. Architect William Strickland, builders, members of Congress, federal officials, and citizens were also present.

The building whose foundation they were dedicating would become the second Philadelphia Mint.

But one small object placed inside its cornerstone gives the event special importance to coin collectors: an 1829 half dime struck on the morning of the ceremony.

The Contemporary Account

The strongest evidence for the July 4 coinage comes from contemporary reporting preserved in later numismatic research.

A Philadelphia newspaper account described a package placed within the cornerstone containing newspapers of the day, a copy of the Declaration of Independence, the Constitution, George Washington’s Farewell Address, specimens of national coins, an early 1792 coin, and a newly struck half dime.

Most importantly, the report identified the half dime as having been coined on the morning of July 4 and described it as the first of a new emission of the denomination after a long interruption.

That evidence strengthens what might otherwise sound like a later numismatic legend. The connection between the 1829 half dime and the cornerstone ceremony was recorded at the time.

The half dime was a silver five-cent coin.

To modern Americans, that description can sound strange because the familiar five-cent piece is the nickel. But the nickel five-cent coin did not appear until the 1860s. In the early United States, five cents was represented by a very small silver coin.

The denomination had deep roots in the nation’s coinage history. The famous 1792 half disme was among the earliest coins struck under federal authority before regular Mint production was fully established.

Regular half dime coinage followed in the 1790s and continued intermittently into the early nineteenth century.

Then production stopped.

No half dimes were struck for circulation after 1805 until the denomination returned in 1829. That meant nearly a quarter century passed without a new federal five-cent silver issue.

The revived denomination did not simply repeat the old Draped Bust half dime.

The 1829 coin introduced the Capped Bust half dime, generally credited to Chief Engraver William Kneass while drawing heavily on the Capped Bust design tradition associated with former Mint engraver John Reich.

Liberty appears on the obverse facing left, wearing a cap secured by a band inscribed LIBERTY. Thirteen stars surround the portrait, and the date appears below.

The reverse features an eagle with a shield on its breast, holding arrows and an olive branch. UNITED STATES OF AMERICA surrounds the design, and the denomination appears as 5 C.

At only about 15.5 millimeters in diameter, the half dime was a remarkably small coin. Its silver content gave it intrinsic monetary significance, but its physical size made it easy to lose—and helps explain why surviving early half dimes can seem almost miniature beside modern American coins.

The Close Collar and a Technological Transition

The 1829 half dime also arrived during an important technological transition at the Philadelphia Mint.

Numismatic research identifies the Capped Bust half dime as one of the first United States coin types produced using the close collar system.

A close collar constrained a planchet during striking, helping create a consistent diameter and a more uniform finished coin. When required, collar technology could also help form edge features.

This represented an advance over earlier production methods in which coin diameters and edge characteristics could be less uniform.

The revived half dime was therefore not merely a new design on an old denomination. It belonged to the Mint’s movement toward more controlled and increasingly mechanized production.

The cornerstone ceremony was designed to communicate permanence.

The objects placed inside effectively formed a nineteenth-century time capsule. The Declaration of Independence and Constitution connected the Mint with the nation’s political foundations. Washington’s Farewell Address evoked the first president. Newspapers documented the world of 1829.

The coins represented the nation’s monetary history.

One of those coins was an example from 1792, linking the new building to the earliest federal coinage. The freshly struck 1829 half dime represented the present—and a revived denomination beginning a new chapter.

The pairing was symbolically powerful: an early relic of American coinage beside a coin struck that morning.

The 1792 Half Disme Returns to the Story

The 1792 coin deposited in the cornerstone is generally identified as a half disme.

That choice created an extraordinary connection across thirty-seven years of Mint history.

The 1792 half disme represented the experimental beginnings of federal silver coinage. Approximately 1,500 were struck before the first permanent United States Mint building was fully operating.

By placing one of those historic pieces in the cornerstone beside an 1829 half dime, Mint officials effectively connected the earliest version of the denomination with its rebirth.

Few ceremonial deposits could have illustrated the continuity of American coinage more neatly.

Further evidence connects special 1829 half dimes directly to July 4.

A Proof 1829 half dime associated with Mint Director Robert Patterson’s family was accompanied by a handwritten inscription from Chief Coiner Adam Eckfeldt identifying it as one of the few pieces of the new emission struck on July 4, 1829.

The significance of that note is difficult to overstate.

Eckfeldt was not a later collector reconstructing the event from tradition. He was the United States Mint’s Chief Coiner and was present at the cornerstone ceremony.

The surviving presentation history reinforces the contemporary newspaper account: special examples of the new half dime were indeed struck in connection with the July 4 event.

Proofs and the First Strikes

Several Proof 1829 Capped Bust half dimes survive, and numismatists have long associated at least some of them with the Independence Day ceremony.

Exactly which surviving pieces were struck on July 4 can be more difficult to prove.

Different die marriages are known in Proof, and numismatic researchers have studied their relationships in an effort to identify the ceremonial pieces. The LM-2 die marriage has particularly strong associations with the July 4 striking.

The safest historical conclusion is therefore specific but restrained: contemporary evidence confirms that half dimes were struck on the morning of July 4 as part of the renewed 1829 emission, and at least one was deposited in the cornerstone. It does not follow that every Proof 1829 half dime now known can automatically be identified as a July 4 ceremonial strike.

The cornerstone ceremony also reflected the limitations of the original Philadelphia Mint.

The first federal Mint complex had been established in Philadelphia in 1792 and began regular operations in 1793. It occupied a group of relatively modest buildings on Seventh Street.

As the United States grew, so did the demands placed on its coinage system. The original facility became increasingly inadequate for the scale and technology of nineteenth-century production.

Congress appropriated funds for a new building, and architect William Strickland designed an imposing structure that projected a very different image from the utilitarian first Mint.

The second Mint would be a monumental federal building rather than a collection of early industrial structures.

The new Philadelphia Mint was designed in the Greek Revival style that became closely associated with important American public architecture.

Constructed of white marble and fronted by classical columns, the building was sometimes described as a “Grecian Temple.”

Its appearance was not accidental. Classical architecture conveyed stability, order, civic virtue, and permanence—qualities well suited to an institution responsible for the nation’s money.

The building took several years to complete after the July 4, 1829 cornerstone ceremony. Operations transferred there in 1833.

For nearly seven decades, it served as the principal facility of the United States Mint.

From Hand Labor Toward the Industrial Mint

The years surrounding construction of the second Mint were also years of rapid technological change.

Early United States coins had been produced using labor-intensive machinery descended from eighteenth-century minting practices. Planchets were prepared through multiple manual processes, and screw presses required substantial human effort.

During the nineteenth century, the Mint increasingly adopted machinery capable of producing coins with greater speed and uniformity.

The close collar associated with the 1829 half dime was one element of that transformation. Steam-powered coin presses would soon become another.

In that sense, the July 4 ceremony stood at a boundary between eras. A new building was rising just as American coin manufacture itself was becoming more precise and industrialized.

The ceremonial pieces were only the beginning.

Half dime production resumed in substantial numbers in 1829. Mint records give a mintage of more than one million pieces for the year.

That volume makes clear that the revived denomination was not merely commemorative. The half dime returned as working money.

Capped Bust half dimes continued through 1837, after which the Liberty Seated design replaced them.

The silver half dime itself survived until 1873. By then, the copper-nickel five-cent coin introduced in 1866 had provided Americans with a larger and more practical five-cent piece, and the Coinage Act of 1873 ended the half dime denomination.

Today, Capped Bust half dimes attract specialists who collect them not only by date but by die marriage.

The Logan-McCloskey attribution system identifies combinations of specific obverse and reverse dies, allowing collectors to reconstruct how dies were paired, reused, modified, and replaced during production.

That type of study turns a tiny silver coin into evidence about Mint operations.

Differences in numerals, letters, stars, die cracks, recutting, and alignment can reveal the sequence in which dies were used. Proof examples add another layer of complexity because of their connection with presentation pieces and special strikings.

Few dates are more historically evocative than 1829 because the series begins with the documented Independence Day ceremony.

What Happened to the Cornerstone?

The second Philadelphia Mint eventually became obsolete just as the first one had.

A third Philadelphia Mint opened around the turn of the twentieth century, and the second building was demolished soon afterward.

When workers dismantled the old structure, the cornerstone was rediscovered.

Accounts of the discovery describe a container within it holding newspapers, a historical document, and coins—the remains of the time capsule deposited in 1829.

The rediscovery transformed what had been described in nineteenth-century records into something physically recoverable more than seventy years later.

The building disappeared, but the story of its foundation survived.

Independence Day already carries extraordinary weight in American history. For numismatists, July 4, 1829, adds a remarkably tangible chapter.

That morning, the United States Mint commemorated its past, prepared for its future, and revived a denomination that had been absent for nearly twenty-four years.

A 1792 coin connected the ceremony with the experimental beginnings of federal coinage. A freshly struck 1829 half dime represented a new emission. The cornerstone beneath them marked the future home of an institution that would produce American money for generations.

The Capped Bust half dime was tiny—worth only five cents and scarcely larger than a modern dime’s central design.

Yet one example was chosen to become part of the literal foundation of the United States Mint.

On July 4, 1829, the rebirth of the half dime and the birth of the second Philadelphia Mint became part of the same story.

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Related Coin History

• The First Recorded Delivery of Flowing Hair Half Dimes
• John Reich and the Birth of the Capped Bust Half Dollar
• 1796 Draped Bust Dime: America's First Federal Dime Enters the Record
• The New Steam-Powered Reeded-Edge Half Dollar Reaches the Treasury