The 2014 Baseball Hall of Fame Half Dollar

For 222 years, every coin the United States struck was flat. Two faces, a flat field, a raised rim — the same basic disc whether it left the Mint in 1794 or 2013. Then, in 2014, that broke.

The reason was an anniversary. The National Baseball Hall of Fame in Cooperstown, New York opened its doors in 1939, and Congress wanted to mark its 75th year with coins. Baseball is round. A baseball glove cups inward. Someone at the Mint asked the obvious question nobody had ever answered with a U.S. coin: what if the coin curved too?

So Congress wrote it into the law. The National Baseball Hall of Fame Commemorative Coin Act — Public Law 112-152, signed August 3, 2012 — didn't just authorize coins. It told the Mint to make them concave on one side and convex on the other, and it pointed to a specific model: a curved coin the Monnaie de Paris (the French Mint) had struck in 2009 for the International Year of Astronomy. The Mint also leaned on technical help from the Royal Australian and Perth Mints, who had bent metal this way before. America was, in this one respect, a latecomer — and it knew it.

The result was three coins in one program: a $5 gold piece, a silver dollar, and this — the clad half dollar, the affordable one, the one most people actually bought.

The obverse — the heads side — shows a worn baseball glove, palm open, the word LIBERTY curving across the leather. Because the coin is concave here, the glove sits in a real cup. You tilt it and it reads like the pocket of a mitt waiting for a catch.

That design didn't come from a Mint staff artist. The Mint ran a public competition — open to any U.S. citizen or resident aged 14 and up — and got 178 entries. The winner was Cassie McFarland, an artist from San Luis Obispo, California, whose glove design beat the rest after panels of Mint engravers and Hall of Fame members scored them. Sculptor-engraver Don Everhart then adapted her drawing into the relief you hold.

The reverse — the tails side, the convex face — is Everhart's own: a baseball, stitches and all, bulging outward exactly the way the real thing does. HALF DOLLAR runs below the bottom seam; UNITED STATES OF AMERICA and E PLURIBUS UNUM ride the curve. Heads cups in, tails swells out — the coin behaves like the equipment of the game it honors. That marriage of form and subject is why it won the international "Coin of the Year" award for 2014-dated coins and the prize for most innovative coin.

Getting there was not clean. In testing, the deep curve caused delamination — the layers of the clad sandwich (a copper core bonded to copper-nickel skins) peeling apart under the strain of being bent so far. The Mint had to back off, settling on a reduced curvature of about 0.058 inch (1.47 mm). The coin you see is the version that survived the engineering, not the one first drawn.

This is a modern commemorative, so it was never meant to circulate or to be rare. You bought it from the Mint, in a box, with a certificate. The law capped the clad half dollar at 750,000 pieces across both finishes, but the Mint didn't sell anywhere near that ceiling.

Reported mintages (as of December 2014) tell the story: about 257,607 proof coins (the San Francisco "S" pieces, struck on polished dies for mirror fields and frosted devices), and roughly 147,556 standard uncirculated coins from Denver, plus another 29,683 in a Young Collectors Set. That puts the clad coin's total well under half its authorized maximum — comfortably scarcer than the cap suggests, though common enough that finding one is easy.

So what makes one half dollar worth more than the next? Two things. First, condition: third-party graders certify these on the 70-point scale, and a flawless PR70 (perfect proof) or MS70 commands a premium over a merely excellent example. Second — and this is the quiet appeal — the shape itself. Many collectors own this coin not as a Hall of Fame souvenir but as a milestone: the day the U.S. Mint first stopped making coins flat. That historical "first" is the durable reason people still chase it, and it's why the design keeps appearing in museum cases, including the Smithsonian's.

A practical note for newcomers: the curve makes these awkward to store and photograph, and the relief sits differently in a holder than a flat coin's does. That's part of the charm — and part of why a clean, well-struck example stands out.