The Headline: The Mack C. Chase Walking Liberty Halves Surface
Stack's Bowers Galleries has announced the sale of the Mack C. Chase Collection — one of the most extensive and finest sets of Walking Liberty half dollars ever assembled — in its Summer 2026 Global Showcase Auction. The announcement landed September 5, 2026, and the American coin portion of the auction concludes September 10–11.
What makes this collection remarkable is how quietly it was built. Mack Chase assembled his Walking Liberty set without the fanfare that usually accompanies a top-tier collection — and that is precisely what makes it so deep. According to John M. Pack, Executive Director of Consignments at Stack's Bowers, the collection "contains many Top Pop and other condition census examples of key rarities" and, for many dates, includes additional lower-grade examples as well, so collectors at every budget level can participate.
The coins have been off the market for at least 10–15 years, and many remain in older-generation grading holders — which adds a layer of genuine provenance to the chase. With more than 250 lots, Stack's Bowers president Brian Kendrella called it "one of the most impressive offerings of the Walking Liberty series to cross the auction block in recent memory."
Among the standouts listed in the catalog: a Superb Gem 1916 in PCGS MS-67 CAC; a condition-census 1916-D in PCGS MS-67 CAC; the key 1921-D graded PCGS MS-66 CAC; and a 1940 assigned an astonishing NGC MS-69 CAC. For a series where the key dates are defined by just how thin the high-grade population is, this is the kind of event that re-anchors the whole market's sense of what the top of the series looks like.
The U.S. Mint's September Lineup: A Privy-Mark Chase and a 5,000-Coin Eagle
The U.S. Mint opened September with a flurry of Semiquincentennial releases, several carrying "250" anniversary elements. Here is what shipped, per the Mint's published product schedule:
- Trump $1 coins (Sept 2). 1776~2026 dual-dated President Donald J. Trump dollars went on sale in 25-coin rolls ($61) and 100-coin bags ($154.50). They are legal tender but are not being issued for circulation. The chase element: the Mint struck 250,000 coins on the Fourth of July with a special "JULY 4th" privy mark and randomly mixed them into the rolls and bags rather than selling them separately. With product limits of 150,000 rolls and 50,000 bags, a full sellout would total 8.75 million coins — meaning the privy-mark coins make up a small fraction of the run.
- American Palladium Eagle (Sept 3). The 2026-W Uncirculated American Palladium Eagle is a one-year Semiquincentennial edition struck at West Point, carrying the 1776~2026 dual date and a Liberty Bell privy mark with the numeral 250. Only 5,000 coins may be produced and sold, with a one-per-household order limit during the first 24 hours. The obverse revives Adolph Weinman's Winged Liberty (Mercury dime) design.
- Calvin Coolidge Presidential Silver Medal (Sept 3).Priced at $164, the matte-finish medal contains one troy ounce of 99.9% silver with no mintage or household limit.
- Best of the Mint: Saint-Gaudens set (Sept 24).The fifth and final entry in the Best of the Mint series pairs a one-ounce 24-karat gold recreation of the 1907 High Relief $20 double eagle with a new silver companion medal.
Around the Market: World's Fair of Money Recap
The ANA's World's Fair of Money wrapped in Pittsburgh (August 25–29), drawing international mints and a packed bourse floor at the David L. Lawrence Convention Center. One of the quieter highlights was the Coin of the Year awards, where China Gold Coin Group's "Chinese Dragon" 10-yuan silver coin took the overall title — the category winner for Best Crown that ultimately led the final voting.
The show also served as a preview venue for the very auctions now in motion — including the Stack's Bowers Summer 2026 Global Showcase, which carries the Chase Walking Liberty collection to the block. For dealers and streamers, that timing is worth noting: the World's Fair of Money is where fall's major consignments get their first public look, and the pricing data that follows is what sets the tone for the next quarter.
Spot Metals: Gold and Silver Hold the Range
At the time of writing (September 7, 2026), gold traded at roughly $4,398.70 per troy ounce and silver at $65.82 per troy ounce. Both metals have cooled from their mid-August peaks but remain historically elevated.
At $65.82 silver, the 90% coinage melt math works out to roughly $50.91 per Morgan or Peace dollar (0.77344 oz), $23.81 per half dollar (0.36169 oz), $11.90 per quarter (0.18084 oz), and $4.76 per dime (0.07234 oz). At $4,398.70 gold, a $20 Saint-Gaudens double eagle carries roughly $4,256 in melt (0.9675 oz of gold).
Notice the contrast in this week's two big stories: a common Walking Liberty half in circulated condition is fundamentally a melt-driven coin, while a 1921-D in MS-66 is a condition rarity whose price has almost nothing to do with silver content. When a collection like Chase's hits the market, it is a reminder that the top of a series trades on scarcity and condition — not on the spot chart.
What This Means for Streamers and Dealers
Two takeaways for anyone pricing coins live. First, the privy-mark chase on the Trump dollar is a reminder that "rare" is often a marketing word, not a data-backed one — 250,000 privy-mark coins spread across up to 8.75 million is scarcity by the Mint's design, not by market demand. Let actual sold comps, not release hype, set your ask.
Second, at the top of a series like Walking Liberty halves, key dates in gem grades have genuinely thin comparable data — which is exactly when a confidence score earns its keep. LastSoldCoin's FloorBid gives you a single dealer-buy number, and BidScore tells you honestly how much market data backs it. A common circulated half shows a high BidScore: deep, liquid comps. A 1921-D in MS-66 shows a lower one: the data is real but sparse. That distinction is the entire discipline of honest pricing.
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