McCook Field 1920's Prototype Wooden Airplane Propeller w/ Spinner

Description

This is a genuinely rare artifact from the earliest days of American military aviation — a 1920s prototype wooden airplane propeller stamped directly from McCook Field in Dayton, Ohio, the U.S. Army Air Service's premier center for experimental aircraft development after World War I. Marked with MFG No. 03258 and design number S.K. 5530, this propeller was almost certainly used in wind tunnel testing or high-RPM structural experiments, making it a hands-on relic of cutting-edge engineering rather than a decorative reproduction.

The propeller comes complete with its original removable, hand-formed aluminum spinner cone — a detail that dramatically amplifies its authenticity and display presence. Period-correct blade repairs and well-worn spinner patina tell the story of real use in McCook's rigorous R&D process. Between 1917 and 1927, McCook Field was the birthplace of modern military aircraft design, and experimental prototypes like this one were cataloged with unique design numbers and built in-house for performance validation. Whether destined for a private collection, aviation museum, or dedicated enthusiast's study, this piece is an irreplaceable window into pioneering American flight history.

Key Features

• McCook Field Provenance: Stamped "McCook Field" on the blades and hand-etched into the hub — directly linking this propeller to the U.S. Army Air Service's legendary experimental development program in Dayton, Ohio.
• Unique Prototype Identification: Marked with MFG No. 03258 and S.K. 5530, a cataloged design number assigned to individual experimental prototypes during McCook Field's R&D trials.
• Original Aluminum Spinner Cone: Includes a removable, hand-formed aluminum spinner cone consistent with 1920s prototype construction — a rare surviving component that most period propellers are missing.
• 1920s U.S. Army Air Service Era: Dates to the interwar golden age of American aviation innovation, when McCook Field engineers developed variable-pitch propellers, high-altitude engines, and record-setting aircraft.
• Dimensions - 31-1/2" x 4-3/4" x 3": Compact and display-ready at 31-1/2" long x 4-3/4" wide x 3" tall (hub base to top of spinner).
• Weight - Approx. 1 lb: Lightweight enough to display on a shelf, wall mount, or within a museum case without specialized mounting hardware.
• Period-Correct Condition: Excellent overall condition; blade repairs and spinner wear are authentic to its experimental use history, not damage — reinforcing rather than diminishing its historical character.
• Wind Tunnel / High-RPM Testing History: Likely used in structural stress experiments or aerodynamic trials, placing it at the very heart of early propeller engineering development.
• Museum-Quality Display Piece: Ideal for aviation museums, private collectors, and enthusiasts of early American military aviation and flight test history.

What's Included

• McCook Field 1920s prototype wooden airplane propeller
• Original removable hand-formed aluminum spinner cone

Why You'll Love It

Very few surviving artifacts carry the direct stamp of McCook Field — the institution that essentially invented modern American military aviation. This propeller isn't a reproduction or a decorative wall piece; it is a cataloged, numbered experimental prototype that was physically used in the development of the technologies that shaped 20th-century flight. The hand-etched markings, period repairs, and worn spinner cone are not flaws — they are the evidence of real history, handled by real engineers working at the frontier of what was possible in the 1920s.

For collectors, the combination of provenance, complete spinner, and verifiable experimental markings makes this an exceptionally difficult piece to find. Aviation museums will appreciate its direct connection to the U.S. Army Air Service's documented R&D program, while private enthusiasts will treasure it as a centerpiece that sparks genuine conversation. At just 1 lb and a manageable 31-1/2" in length, it displays beautifully without dominating a room. If you are serious about early American aviation history, this is the kind of piece that simply does not come around twice.

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