KPM: Royal Berlin Porcelain

KPM (Konigliche Porzellan-Manufaktur Berlin) is the royal porcelain manufactory of Berlin, Germany, founded in 1763 by King Frederick the Great of Prussia. Among the most prestigious European porcelain houses, KPM is renowned for its exceptionally fine white porcelain body, meticulous hand painting, and the production of superb porcelain plaques that rival oil paintings in detail and luminosity. KPM continues to operate today, making it one of the oldest continuously producing porcelain factories in the world.

Identification and Marks

• Blue scepter mark: The primary KPM mark since 1763 is a cobalt blue underglaze scepter (the scepter from the Prussian royal coat of arms). The form of the scepter varies by period and is the primary means of dating KPM pieces.
• Red eagle mark (orb mark): An iron-red or purple overglaze mark (Reichsapfel/imperial orb) used on pieces that passed quality control. Its presence confirms first-quality production.
• "KPM" letters: Sometimes appear alongside the scepter, particularly on 19th- and 20th-century pieces.
• Impressed marks: Numerals and letters impressed into the base indicate mold numbers and workman's marks.
• Period indicators: Earlier scepters (1763--1830s) tend to be smaller and more delicately drawn. Later 19th-century scepters are larger and bolder.

Types of KPM Collectibles

• Porcelain plaques (Bildtafeln): Hand-painted portrait and figural plaques, produced primarily from the 1830s through the early 1900s. These are the most sought-after KPM items. Subjects include copies of Old Master paintings, portraits of beautiful women, mythological scenes, and religious subjects.
• Dinnerware: Fine table services in patterns such as Kurland (neoclassical), Rocaille, and Urbino. Court services made for Prussian royalty are especially valuable.
• Figurines: Classical and allegorical figures, though less prolific than Meissen in this category.
• Vases and decorative pieces: Elaborately painted and gilded vases, urns, and centerpieces.
• Lithophanes: Translucent porcelain panels that reveal detailed images when backlit, produced from the 1830s onward.

Auction Price Ranges

Historical Periods

KPM production spans over 260 years and can be divided into key periods:

• Frederick the Great era (1763--1786): The founding period under royal patronage. Rococo and early neoclassical styles. Court services and diplomatic gifts.
• Biedermeier period (1815--1848): Refined neoclassical porcelain. The plaque-painting tradition begins to flourish.
• Late 19th century (1850--1900): The peak of porcelain plaque production. Berlin artists copied Old Master paintings onto porcelain with extraordinary fidelity. Major international exhibition pieces.
• 20th century: Continued high-quality production through two World Wars. Art Deco and modernist designs in the 1920s--1930s. Post-war production continues the traditional strengths.
• Contemporary: KPM remains a working manufactory, producing both traditional and contemporary designs in Berlin.

Condition Factors

• Plaque condition: Cracks, chips, or paint losses on porcelain plaques drastically reduce value. Surface scratches from improper cleaning also detract. Plaques should retain vibrant, unfaded colors.
• Gilding: Original gilding on KPM pieces should show appropriate age wear but remain largely intact. Regilded pieces are worth less.
• Dinnerware: Knife scratches, worn gilt rims, and hairline cracks from use are common. Unused pieces in original condition command strong premiums.
• Frame quality: Porcelain plaques in original period frames (often ornate gilded wood) are worth more than unframed examples.

Collecting Tips

• KPM porcelain plaques are the flagship collectible; the finest examples with after-Raphael or after-Richter subjects routinely sell for five and six figures at major auction houses.
• The scepter mark has been copied by other factories; compare the scepter form carefully against reference guides and look for the accompanying orb/eagle quality mark.
• KPM dinnerware in the Kurland pattern remains in production and is popular for both use and collecting; vintage examples with hand-painted decoration are more valuable than modern production.
• Lithophanes are an affordable entry point into KPM collecting and have strong crossover appeal with lighting and curiosity collectors.
• Berlin porcelain scholar Winfried Baer's catalog and the KPM factory archives are the primary references for authentication and dating.
• KPM plaques depicting women after paintings by Angelo Asti, Richter, and Wagner are among the most commercially desirable subjects.
• Beware of later transfer-printed plaques imitating hand-painted examples; genuine hand-painted plaques show visible brushwork under magnification.
• KPM Easter eggs, produced annually as limited editions, are an affordable and colorful entry point into KPM collecting.
• The factory showroom in Berlin remains open to visitors and sells current production alongside historical exhibition pieces.