Calendar in Pottery and Porcelain for Appraisers and Collectors

As all art and antique collectors can confirm, a sense of chronology is vital in the valuation of items. This is especially true for items like pottery and porcelain, where variations in design, style and craftsmanship can often closely track different historical periods. Therefore, having a calendar or timeline could prove to be an invaluable tool for appraisers and collectors.

Major Historical Periods of Pottery and Porcelain Production

Ancient Times (up to 500 AD)

• Neolithic Age (10,000 - 2000 BC): Earliest known pottery originates from this period in Asia. Ceramics from this time are typically handmade and decorated with simple forms.
• Bronze Age (3000 - 1200 BC): This period saw the development of wheel-thrown pottery, allowing for mass production and more intricate designs.
• Iron Age (1200 - 500 BC): The pottery became more complex in design, using iron oxides for decoration, leading up to the fine wares of the Roman Empire.

Medieval Period (500 -1500 AD)

• Early Medieval (500 -1000 AD): Most ceramics from this period are functional rather than decorative, with a strong use of local clays.
• Late Medieval (1000 - 1500 AD): Stoneware was prevalent during this period, featuring salt-glazed techniques with intricate decorations.

Modern Period (1500 - Present)

• Renaissance (1500 - 1700 AD): The period known for highly decorated majolica ware and the influence of Far East styles in Europe.
• Industrial Revolution (1750 -1900 AD): This period saw a revolution in pottery production, with new techniques like transfer printing, and the introduction of bone china.
• 20th Century (1900 - 2000): This era showcases the work of studio potters, Art Deco, Mid-century modern, and other innovative styles.

Key Historical Marks and Signatures

• Ming Dynasty (1368 - 1644): Blue and white porcelain was hallmark of this era, sometimes marked with an emperor's reign.
• Meissen Manufactory (1710 - Present): Known for the crossed swords trademark.
• Royal Porcelain Factory in Berlin (KPM 1763 - Present): Identified by the cobalt blue scepter mark.
• Wedgwood (1759 - Present): Known for it's 'Portland Vase' or 'Wedgwood' mark.

Calendar and Timeline Tools for Appraisers and Collectors

1. Kovels' Antique Identification Directory: An annual publication providing a timeline of pottery and porcelain marks.
2. Encyclopedia of British Pottery and Porcelain Marks: Handy guide to British ceramic marks from 1500 to the present.
3. Antique Marks Glossary: An online resource detailing porcelain and pottery marks from around the world.
4. Pottery Marks Index: An app providing a database of pottery marks for easy identification.

In conclusion, maintaining a pottery and porcelain calendar or timeline can help appraisers and collectors more accurately assess items' age, provenance, and, ultimately, their value.