2026-S Wisconsin, Reverse Proof Proof

San Francisco struck the 2026-S Wisconsin Reverse Proof as the second of two San Francisco formats for the design, with per-design mintage not yet finalized at writing. The reverse proof ships exclusively through the 2026 American Innovation Dollar Reverse Proof Set, the four-coin product that has bundled the year's state designs into a single tightly limited release since 2019. Reverse-proof totals across the program have run an order of magnitude below standard proofs: the 2024 cycle's 30,000 reverse-proof figure against an 800,000 standard proof, a ratio better than 26 to 1. The reverse, designed by Artistic Infusion Program designer Paul Romano and sculpted by Mint Medallic Artist John P. McGraw, is a stylized aerial view of the Cray-1 supercomputer with the cabinet outline reading as a C, cueing both "Cray" and "computer." The 2026 obverse retains the Justin Kunz Statue of Liberty sculpted by Phebe Hemphill, with a Liberty Bell privy mark inscribed 250 for the Semiquincentennial.

The reverse-proof finish inverts the standard proof contrast: fields are frosted, devices are mirrored. On the Wisconsin design the inversion reads especially well across the polished cabinet curve, which catches light as a bright reflective arc against the satin background and echoes the actual Cray-1's anodized panels. Most examples certify Cameo or higher under PCGS and NGC reverse-proof standards, with PR70 results not uncommon given modern strike quality and careful capsule packaging. The Cray-1 itself was built in Chippewa Falls by Cray Research, founded by Seymour Cray in 1972; serial number one shipped to Los Alamos in 1976 at roughly 160 megaflops.

Market position will be set by the reverse-proof figure once the Mint publishes it, but the program's pattern through 2025 points to a meaningful premium over the matching standard proof. Recommended certified at PR70 for registry pursuits and raw inside the original four-coin reverse-proof set for collectors keeping the program intact in its issued packaging. The badge stays Regular per program convention; reverse proofs are not classified Key Date even when the issued mintage is low, and any scarcity is conveyed in the prose rather than the badge. The Reverse Proof Set program structure and the full state-by-state rotation through the scheduled 2032 close are covered in the American Innovation Dollar series history.