The Color-Plate Trap: How to Spot a Sophisticated Facsimile in Audubon and Redouté

The Investigation

The market is alive with color-plate fever. Kestenbaum & Company's March 5th sale features a robust collection of natural history specimens. Swann Galleries just moved a hand-colored Audubon Carolina Parrot for $137,000. The collectors are hunting. The problem? The facsimile market has become so refined that the untrained eye cannot distinguish a 1970s reproduction from a genuine 1830s Redouté.

I've spent the last decade scouting estate sales across New England. Ninety percent of what I find labeled "original Audubon" or "hand-colored Redouté" is a sophisticated lie—a beautiful one, but a lie nonetheless.

Let me show you the tells.

The Specimen: Audubon's Birds of America (1827–1838)

John James Audubon's Birds of America is the Mount Rushmore of color-plate books. The original double-elephant folio edition featured hand-colored aquatint engravings. A single plate in true first state can fetch $50,000 to $200,000 at auction.

But here's the trap: reproductions exist at every price point. Some are honest reproductions—printed in the 1970s or 1980s and sold as such. Others are sophisticated facsimiles—printed to deceive, with artificially aged paper and faux foxing.

The Tell: Paper & Ink

The first state Birds of America was printed on wove paper with a distinct chain-line pattern. The paper has a specific weight—approximately 22 x 28 inches—and a particular texture that modern paper mills struggle to replicate exactly.

(Referring, of course, to the specific gravity and deckle-edge treatment of the original Whatman stock.)

What to look for:

The Chain-Line Test: Hold the plate up to strong light. The original exhibits a visible, regular chain-line pattern (approximately 1-inch intervals). A facsimile's chain-line, if present at all, will appear uniform and artificial—almost printed rather than woven.
The Edge Test: Original plates have a natural deckle edge—irregular, feathered, and slightly raised. Modern reproductions have either a machine-cut edge (too perfect) or a faked deckle (too consistent).
The Weight Test: Authentic Whatman paper from the 1820s–1830s has a specific heft. A true first-state plate weighs noticeably more than a modern reproduction. This is not scientific, but your hand knows the difference.

The Tell: The Aquatint Texture

Audubon's hand-colored aquatints were created through a multi-step process: aquatint etching, hand-coloring with watercolor, and selective re-etching. The result is a visible texture—a slight granulation in the colored areas, particularly in the bird's plumage.

What to look for:

The Granulation Test: Use a magnifying glass (10x) to examine the colored areas. In an original, the aquatint texture is visible as a fine, consistent grain. In a facsimile, the grain is either absent (lithographic reproduction) or uniform and printed (offset reproduction).
The Color Variation Test: Hand-coloring is inherently imperfect. Original plates exhibit slight color variations, over-runs, and evidence of human application. A facsimile's color is uniform—suspiciously so.
The Ink Depth Test: Original aquatint plates have a visible depth of ink. The colored areas sit on the paper, not in it. Facsimiles often exhibit flat, printed color with no dimensional quality.

The Tell: The Signature & Inscription

Audubon signed his plates. But here's the forensic detail: his signature evolved over the course of the publication (1827–1838). Early plates feature a different hand than later ones.

What to look for:

The Signature Progression: If you're examining a plate from the second volume (1831–1833), Audubon's signature should exhibit specific characteristics—a particular slope, letter formation, and ink pressure. A facsimile will copy a "generic" Audubon signature, not accounting for the date-specific evolution.
The Inscription Clarity: Original inscriptions (plate numbers, publication information) are crisp and precise. Facsimiles often exhibit slight blurring or inconsistent ink density in the text areas.

The Specimen: Redouté's Les Roses (1817–1824)

Pierre-Joseph Redouté's Les Roses is the holy grail of color-plate books. The original edition featured 169 hand-colored stipple engravings of roses. A single plate in true first state can fetch $5,000 to $15,000.

The facsimile market here is equally treacherous.

The Tell: The Stipple Pattern

Redouté's roses were created using the stipple engraving technique—tiny dots of ink creating tone and dimension. This is labor-intensive and difficult to replicate convincingly.

What to look for:

The Dot Magnification Test: Use a 20x magnifying glass to examine the petals. In an original, the stipple dots are visible as individual impressions, with slight variations in size and spacing. In a facsimile, the dots are uniform and printed, lacking the dimensional quality of engraved work.
The Highlight Test: Redouté left specific areas of the paper white (the highlights on the rose petals). These whites are crisp and precise in originals. Facsimiles often exhibit slight ink residue or printing artifacts in these "white" areas.
The Shadow Depth: The deepest shadows in Redouté's work exhibit multiple layers of stipple dots, creating a visible texture. Facsimiles flatten this effect.

The Tell: The Hand-Coloring Evidence

Redouté's roses were hand-colored after printing. This means:

Color Variation: Each plate was colored by hand, so no two are identical. The exact shade of a rose petal varies slightly from copy to copy.
Over-runs: The hand-coloring occasionally ran beyond the engraved line. This is evidence of authenticity, not a flaw.
Pigment Oxidation: Original hand-coloring used specific pigments (carmine, vermillion, indigo) that oxidize over time. A 200-year-old Redouté rose will exhibit subtle color shifts and fading patterns consistent with known pigment chemistry.

What to look for:

The Pigment Test: If you can access a UV light (365 nm), examine the colored areas. Original pigments respond predictably to UV exposure. Modern synthetic pigments respond differently. This is not a definitive test, but it's a strong tell.
The Consistency Test: If you're examining a bound volume of Les Roses, compare the coloring across multiple plates. Originals exhibit variation—some plates are more heavily colored than others, suggesting different hands or different time periods. Facsimiles are uniformly consistent.

The Market Moment

We are in a speculative peak for color-plate books. Auction houses are moving significant volume. Estate sales are packed with "discoveries." The casual collector is entering the market with capital but no forensic training.

This creates opportunity—but only for those who can separate the specimen from the facsimile.

The Verdict

If you're examining a color-plate book at auction or estate sale:

Always use magnification. A 10x loupe is non-negotiable. Bring it with you.
Test the paper. Hold it to light. Feel its weight. Examine the edges.
Examine the signature. Cross-reference it with dated examples from the same period.
Know the pigments. Research the specific colorants used in the original publication. Modern facsimiles often use synthetic pigments that look "too perfect."
Consult the bibliography. For Audubon, reference the definitive Waldemar Fries catalog. For Redouté, consult the Arboretum et Fruticetum Britannicum records.

The Archive Rule: If you cannot verify the specimen's authenticity through multiple forensic tells, it is not a cornerstone. It is a beautiful lie.

The color-plate market is rich with specimens. But the facsimiles are equally rich. Your silver-framed spectacles and a 20x loupe are your only defense.

Happy hunting.