The James A. Stack, Sr. Collection

The Legendary James A. Stack, Sr. Collection: A Once-in-a-Generation Offering

James A. Stack, Sr.’s name stands as one of the most important—yet underappreciated—in American numismatic history. Beginning his collecting pursuits by the late 1930s, Mr. Stack quietly assembled one of the most comprehensive and distinguished collections of United States coins ever formed. His goal was simple but ambitious: to gather as complete a collection of U.S. coins as time would allow. In just over a decade, he accomplished that goal and more, with holdings that spanned copper, silver, and gold coinage, as well as significant rarities in U.S. paper money, ancient coins, and world issues.

Mr. Stack’s approach to collecting was marked by deep scholarship and impeccable taste. He was known for acquiring coins not only for their rarity but for their exceptional quality and provenance. At a time when major 19th and early 20th century collections were being dispersed, he capitalized on these opportunities, purchasing from landmark sales such as the Atwater, Dunham, and Colonel Green collections, among many others. Highlights of his cabinet that have been sold in prior auctions included many of the greatest U.S. rarities: an 1802 half dime, 1894‑S dime, 1838‑O half dollar, the 1815 half eagle, and the finest known 1870‑S silver dollar. So passionate was his pursuit that even contemporary rarities like the 1933 double eagle found their way into his albums—until it was surrendered to the U.S. Secret Service in 1945, leaving only a handwritten note: “Secret Service has mine.”

Despite his extraordinary achievements, Mr. Stack maintained a low profile. He avoided public accolades, often acquiring coins privately or through friends and agents—including Joseph and Morton Stack, the founders of Stack’s Rare Coins, with whom he shared a surname but no relation. His focus remained entirely on the coins and the legacy he would leave.

Following his passing in 1951, the Stack collection was divided among his three children, with instructions that it remain intact until his youngest grandchild had turned 25. This directive ensured that none of his coins returned to the market until Stack’s Rare Coins (the predecessor of Stack’s Bowers Galleries) began auctioning portions of the collection in 1975. These landmark sales—held through the 1970s, 1980s, and 1990s—cemented the Stack name as a byword for rarity and quality among a generation of collectors.

Now, after a 30‑year hiatus, Stack’s Bowers Galleries is proud to present the next chapter in this historic series. Selections from the James A. Stack, Sr. Collection will be offered in two sales, in December 2025 and February 2026, from the firm’s state‑of‑the‑art Griffin Studios in Costa Mesa, California. Valued at around $20 million, this offering features more than 200 coins, including multiple pieces individually worth more than $1 million each. From early U.S. gold and silver to Territorial issues and finest known specimens, the upcoming offerings reflect the same connoisseurship that define Mr. Stack’s legacy.

For today’s collectors, the opportunity to acquire coins from the James A. Stack, Sr. Collection is more than a chance to own exceptional rarities—it is a direct link to one of the greatest eras in American numismatics.