Adam Eckfeldt: the man who built the press, then ran it for fifty years

In the summer of 1792, the United States had a constitution, a president, and almost no coins of its own. It also had no mint building — just a half-finished structure on Seventh Street in Philadelphia and a deadline. To make money, the new nation needed machinery, and to make machinery it needed a mechanic. It found one a few blocks away.

Adam Eckfeldt was born in Philadelphia on June 15, 1769, the son of a German immigrant who ran a large smithy making edge-tools and implements. He grew up in his father's workshop, learning ironwork and machinery — exactly the skills a brand-new mint would need. His father had even tinkered with early American coinage himself, so the trade was practically in the family before the Mint existed.

So when the Mint went looking for someone to build a screw press — the heavy, hand-cranked machine that stamps a design into a metal blank — Eckfeldt got the work. He built that first press in 1792, supplied scales and a lathe, and the next year added a device to feed coin blanks into the press automatically. He was, at first, a contractor: paid by the job, not on staff.

He joined the payroll in 1795 and was appointed assistant coiner on January 1, 1796 — a post President Washington signed off on. He held it for eighteen years. Then, in 1814, on the death of his predecessor, he became the Mint's second chief coiner, the official responsible for actually turning approved designs into struck coins. He kept that job for twenty-five years. And here is the remarkable part: after he retired in 1839, he kept showing up and doing the work anyway, unpaid, until he died in 1852. His own family said the Mint barely knew how to replace him.

Eckfeldt was not a flamboyant artist. A contemporary who knew him, the engineer George Escol Sellers, described him as "a cautious, careful, orderly and painstaking man… not one of the dashing, pushing, inventive mechanics" — but a man under whose care "many apparently slight improvements were gradually adopted that in the aggregate amounted to a great deal." That is the signature of his whole career: a thousand small refinements that made coins come out cleaner and faster.

His hands were on the metal at the very beginning. Eckfeldt is credited with making the die for the 1792 half disme — the small silver five-cent piece many consider the first coin struck under federal authority. (The word "credited" is doing real work here: the attribution comes largely from Eckfeldt's own later accounts and Mint tradition, and historians still debate exactly who cut which die.) On the 1792 disme pattern — a full ten-cent piece that never went into circulation — numismatic scholars most often place Eckfeldt at the obverse (the heads side), with the artist William Russell Birch likely responsible for the reverse. Even that is disputed; the records from 1792 are thin and the names overlap.

What is clearer is what he did with the first cents. America's first one-cent coins of 1793, the Chain cents, were so crude the public mocked them — a chain on the back looked, to a young republic, uncomfortably like the symbol of slavery rather than union. The design was softened, and the chain was replaced with a wreath. Eckfeldt's role in that redesign is well attested: he engraved the dies for the new Flowing Hair Wreath cent, and some accounts credit him with the design changes themselves — a wreath on the reverse, a sprig of leaves under Liberty's head. (The underlying design is sometimes credited to chief coiner Henry Voigt; what Eckfeldt indisputably did was cut the working dies.) He engraved the first half-cent dies that same year.

He was also a fixer of process, not just punches. He worked out a way to temper a die by spraying water across its face so the steel hardened evenly — a small trick with a big payoff in how long a die survived. Later in his career he resisted, then embraced, the sweeping mechanical changes that Franklin Peale brought back from a tour of Europe's mints. Eckfeldt fretted that "if Mr. Peale had full swing he would turn everything upside down," and preferred to adapt the Mint's existing presses rather than replace them. He lost that argument — the Mint went to steam power in 1836 — but he came around, and ended up enthusiastic about the labor-saving machines he had once distrusted.

His quietest legacy may be the most valuable. As chief coiner, Eckfeldt began setting aside unusual pieces — specially struck "master coins," and the curious foreign coins that arrived at the Mint as raw bullion to be melted. He saved them instead of melting them, sometimes paying out of his own pocket. That hoard became the Mint's Cabinet, and the Mint's Cabinet eventually became the Smithsonian's National Numismatic Collection. The man who built the machine that destroyed old coins also founded the collection that preserved them.