Unveiled to the public on the NBC television program Home with Arlene Francis in 1956, the Eames Lounge Chair and Ottoman (Herman Miller Model 670/671) remains the undisputed sovereign of twentieth-century American furniture design. Charles Eames famously explained that his ambition was to create a modern equivalent to the nineteenth-century English club chair, providing "the warm receptive look of a well-used first baseman's mitt."
1. Tectonic Mechanics: Molded Plywood & Neoprene Shock Mounts
Following their wartime experiments designing molded plywood splints and glider cockpits for the U.S. Navy, Charles and Ray Eames spent over a decade perfecting compound-curved wood technology.
Anatomy of the Chair Assembly
- Three Molded Shells: Composed of three distinct curved plywood elements: the seat base, the lower backrest, and the upper headrest. Each shell consists of multiple plies of hardwood veneer pressed under steam and high-frequency electrical heat.
- The Shock Mount Joinery: Rather than puncturing the exterior wood shell with visible bolts or screws, the backrest and armrests are connected via heavy, vulcanized neoprene rubber pucks (shock mounts) chemically bonded to the inner face of the wood. This allows the back to flex independently, providing responsive ergonomic support.
- Die-Cast Aluminum Base: The chair rotates on a five-star die-cast aluminum swivel base, while the ottoman rests on a stationary four-star base. The upper surface of the legs is polished to a brilliant silver, while the vertical sides are finished in satin black enamel.
- Permanent 15-Degree Tilt: Unlike traditional mechanical recliners, the Eames Lounge Chair possesses no internal levers or ratchets. It is fixed in a permanent, scientifically calculated 15-degree backward tilt that relieves lumbar compression.
2. Manufacturing Chronology & Wood Veneer Iterations
Discerning collectors evaluate the chair according to four primary production generations:
| Generation | Production Dates | Veneer Species & Shell Plies | Identifying Labels & Hardware |
|---|---|---|---|
| 1st Generation | 1956–1960 | 5-ply Brazilian Rosewood (Dalbergia nigra); rich reddish-black grain with wild feathering. | Round black circular medallion reading "Designed by Charles Eames / Herman Miller Zeeland Mich"; 3 silver screws under armrests; down-and-feather cushion filling. |
| 2nd Generation | 1961–1975 | Transitioned to 7-ply Brazilian Rosewood for enhanced structural rigidity. | Black rectangular foil label; threaded glides on base legs; early polyurethane foam-wrapped down cushions. |
| 3rd Generation | 1976–1991 | 7-ply Brazilian Rosewood until 1991, when CITES international bans prohibited harvesting of wild Brazilian rosewood. | Silver rectangular Herman Miller badge; synthetic Dacron / foam cushions; thicker die-cast aluminum base casting. |
| 4th Generation (Modern) | 1992–Present | Sustainable Santos Palisander (Bolivian rosewood), American Walnut, Ebony, and White Ash. | Herman Miller / Vitra embossed medallions; in 2010, an expanded "Tall" dimension option was introduced alongside the original classic size. |
3. Forensic Collector's Authentication Checklist
Because the Eames Lounge Chair is the single most counterfeited furniture design in history, authenticating a piece requires checking several definitive physical details:
I. Count the Base Legs (The 5/4 Rule)
An authentic Eames Lounge Chair always has five legs on the chair and exactly four legs on the ottoman. Any chair possessing only four legs on the main swivel base, or an ottoman with five legs, is an immediate knockoff.
II. Verify the Recline Mechanism
An authentic Eames Lounge Chair never reclines with a handle, knob, or lever. If you see a lever under the seat or an adjustable footrest mechanism, it is a commercial replica.
III. Inspect the Shell Interiors
Remove the detachable cushions (attached by discreet clips and snaps). There should be zero visible screws or bolts penetrating the outer wood veneer. The armrests must attach directly to the internal rubber shock mounts.
IV. Base Proportions & Castings
Genuine Herman Miller and Vitra bases feature subtly tapered legs with a soft curve toward the glides. Knockoffs often use cheap tubular square metal legs or heavy, flat-bar steel bases.
4. Secondary Market Valuation & Auction Records
| Edition / Vintage | Materials & Provenance | Estimated Auction Value (USD / EUR) |
|---|---|---|
| 1956 1st Generation (Brazilian Rosewood) | Intact original black leather, feather cushions, round medal | $12,000 – $25,000+ |
| 1960s 2nd Generation Rosewood | Well-patinated leather, no shell cracks, intact mounts | $6,500 – $11,000 |
| 1980s Herman Miller Rosewood | Late vintage Brazilian rosewood shell | $4,500 – $7,000 |
| Contemporary Herman Miller / Vitra Edition | Santos Palisander or Walnut, certified authentic | $3,500 – $5,500 (Retail $7,995+) |
Have an Inherited or Estate Eames Lounge Chair?
Establishing the precise production generation, veneer rarity (authentic Brazilian rosewood vs. Bolivian palisander), and shock-mount condition is critical before consignment or restoration. Submit high-resolution photographs to our Authentication & Appraisal Advisory Desk.