A 1939 Proof Walking Liberty Half Dollar graded Proof-68+ by PCGS and approved by CAC will headline Stack's Bowers' Summer 2026 auction, highlighting the rarity and preservation standards that define top-tier U.S. coin collecting
One of the finest surviving examples of the 1939 Proof Walking Liberty Half Dollar is set to appear at Stack's Bowers' Summer 2026 Global Showcase Auction, drawing attention from collectors and numismatic experts. Graded Proof-68+ by PCGS and carrying CAC approval, this coin stands at the very top of the PCGS census, with no higher-graded examples known as of August 2026. Its appearance in the auction's Rarities Night session underscores the ongoing demand for U.S. coins that combine historical significance, technical quality, and exceptional preservation.
The Walking Liberty Half Dollar, designed by Adolph A. Weinman, is widely regarded as one of the most artistically ambitious U.S. coin designs. The obverse features Liberty striding toward a rising sun, while the reverse depicts a powerful eagle on a rocky perch. The proof version, struck at the Philadelphia Mint, brings out the sculptural detail and surface quality that collectors prize.
Proof Coinage Returns and the 1939 Issue
After a two-decade hiatus, the United States Mint resumed regular proof coin production in 1936 under Mint Director Nellie Tayloe Ross. The Philadelphia Mint produced Proof Walking Liberty Half Dollars from 1936 through 1942, creating a short but celebrated series of just seven dates. The 1939 issue, with a mintage of 8,808 pieces, sits at the midpoint of this run. While its mintage was only slightly higher than the 1938 issue, the 1939 Proof has proven more available in high grades, likely due to careful preservation by collectors at the time.
According to PCGS data as of August 5, 2026, only seven examples of the 1939 Proof Walking Liberty Half Dollar have been certified at the Proof-68+ level, with none graded higher. PCGS also lists 75 coins at Proof-68, but population figures may include resubmissions. CAC's certification database recorded a combined total of 28 coins at Proof-68 and Proof-68+ with CAC approval, further emphasizing the rarity of coins at this level of preservation.
Condition Rarity and Market Impact
While the 1939 Proof Walking Liberty Half Dollar is not the rarest by mintage-1936 holds that distinction-its scarcity in top grades makes it a major condition rarity. Most auctioned examples fall between Proof-64 and Proof-67, with Proof-68 coins appearing occasionally. However, Proof-68+ coins are seldom offered, and none have surpassed this grade at PCGS. The last publicly recorded auction for a PCGS Proof-68+ example reached $40,800 at Heritage Auctions in April 2020, according to PCGS records.
The coin's appeal is enhanced by its visual qualities. Stack's Bowers describes the offered piece as an upper-end Ultra Gem, with sandy-gold toning, powder-blue and rose-russet iridescence, and sharply struck details. Such a combination of color, surface quality, and technical grade is rare, even among proof coins of this era. For advanced collectors, the opportunity to acquire a coin at the summit of the PCGS census, with CAC approval and distinctive eye appeal, is significant.
Technical Details and Collecting Context
The 1939 Proof Walking Liberty Half Dollar was struck at the Philadelphia Mint without a mintmark, using a composition of 90% silver and 10% copper. Each coin weighs 12.50 grams and measures approximately 30.6 mm in diameter, with a reeded edge. The PCGS number for this issue is 6639, and the NGC Universal ID is 27V7. The coin will be offered as Lot 2103 in Session 2 (Rarities Night) of Stack's Bowers' Summer 2026 Global Showcase Auction.
For collectors seeking to complete a set of Proof Walking Liberty Half Dollars, the 1939 issue is essential. While lower-grade examples are accessible, coins at the Proof-68+ level are extremely limited. The upcoming auction will test current market demand for top-graded, visually distinctive U.S. proof coinage, and may set a new benchmark for the series.
Proof coinage occupies a unique place in U.S. monetary history. Unlike regular circulation coins, proofs are struck with specially prepared dies and planchets to produce sharp detail and mirror-like surfaces. The return of proof production in 1936 marked a renewed focus on collector-oriented issues by the U.S. Mint. Today, proof coins are valued not only for their technical quality but also for their role in preserving the artistry and history of American coinage. The 1939 Proof Walking Liberty Half Dollar exemplifies how condition rarity and visual appeal can elevate a coin's status among collectors, even when its original mintage was not especially low.
