The 1915-S Panama-Pacific Half Dollar

On the morning of April 18, 1906, an earthquake and the three days of fire that followed leveled much of San Francisco. Nine years later, the city answered with the most extravagant party in its history.

The occasion was the Panama-Pacific International Exposition — a world's fair held from February 20 to December 4, 1915 to celebrate the opening of the Panama Canal, which had cut the sea voyage from coast to coast nearly in half. But everyone understood the second message. By draping a glittering temporary city of domes and courtyards along the bay (on land filled in for the purpose — today's Marina District), San Francisco was telling the world it had come all the way back. Close to 19 million people came to see it.

A fair on that scale needed money. So on January 16, 1915, President Woodrow Wilson signed an act of Congress authorizing a set of commemorative coins to be sold to the public as a fundraiser — among them this half dollar. The coins were struck in San Francisco, then sold at the fair to visitors who wanted a souvenir with real silver in it.

The obverse — the heads side — was the work of Charles E. Barber, the Mint's chief engraver. It shows Columbia, the female personification of America, scattering flowers from a cornucopia while a small child stands behind her holding more. Behind them, the Golden Gate strait opens to the setting sun. It is a picture of West Coast abundance: a young, fertile land facing the Pacific. The "S" mint mark sits to the left of the date.

The reverse — the tails side — is usually credited to George T. Morgan, the engraver famous for the Morgan dollar. It carries an eagle with raised wings, perched on the Union shield, framed by an oak branch (strength) and an olive branch (peace). The two men's roles overlap and some details are disputed, but Barber and Morgan are the names on the work.

Look closely at the reverse and you'll find a quiet first. The motto IN GOD WE TRUST appears here — and this was the first US commemorative coin ever to carry it. The half dollar is also usually called the first US commemorative to depict Liberty (in her guise as Columbia), and the first commemorative struck at a branch mint rather than at Philadelphia. For a coin made to sell trinkets at a fair, that is a remarkable run of firsts.

The number that matters most is 27,134 — the net mintage. The Mint struck 60,030 of these half dollars, but the public didn't buy them all. After the fair closed, 32,866 unsold coins were melted back into bullion, leaving only about 27,000 in collectors' hands. That single act of housekeeping turned a fairground souvenir into a genuinely scarce coin.

Sales were run by Farran Zerbe, a coin promoter and past president of the American Numismatic Association, who hawked the coins from his "Money of the World" exhibit at the fair. He sold the half dollar for a dollar, or six for five — a tidy markup on fifty cents of face value that went toward the exposition.

For collectors, the half dollar is also the most affordable entry point to one of the most coveted prizes in US numismatics: the complete Panama-Pacific set. The same 1915 program produced a gold dollar, a $2.50 gold quarter eagle, and two enormous $50 gold pieces — one round, one octagonal — designed by Robert Aitken. Those $50 "slugs" are among the most famous coins America ever made, and a full Pan-Pac set, often housed in its original copper frame, is a five-figure-and-up trophy. The half dollar is the door into that story. Condition drives value: well-struck, lightly handled examples with original luster command strong premiums, and these coins are prized for the deep, multi-color toning silver of this era can develop.