Examine the glaze consistency, firing marks, and period-accurate techniques, such as crystalline or drip glazes. Original French pottery glazes, such as those on Denbac pottery or Taxile Doat’s Sèvres works, exhibit controlled artistry and are often matched to authentic makers’ marks.

Provenance is essential; it validates authenticity and origin and enhances market value. Collectors, especially those interested in rare French pottery, value detailed provenance for pieces from renowned artisans like Taxile Doat or those tied to the University City Pottery movement.

Not all collectible French pottery from reputable makers like Denbac or Labrec is stamped or signed. Look for impressed, incised, or painted marks that indicate the workshop, artist, or origin. These are critical for appraisals and authenticity.

Yes, many French pottery pieces, particularly high-fired examples like Denbac pottery or porcelain works by artists such as Taxile Doat, are generally stable in humidity due to their durable glaze and firing techniques.

Early 19th-century works, especially from Sèvres or artisan studios like Doat’s, carry higher value due to rarity and historical relevance. That said, unique Denbac pottery and French Art Deco pieces from the 1920s to the 1930s are rapidly gaining traction among serious collectors.