How to Identify Pottery and Porcelain Marks

Photograph the object before the mark

Start with clear views of the front, back, sides, base, foot rim, and any lid or handles. These establish the object’s form and show where the mark sits. Then photograph the mark straight on, filling the frame without cutting off letters or symbols.

Use soft daylight or light from two angles to reduce glare. Take one close-up and one wider photograph that shows the mark’s position. Include a ruler beside the base when scale is not obvious, but do not cover or touch fragile decoration.

• Overall form and proportions
• Base, foot rim, and unglazed areas
• Printed, painted, impressed, incised, or applied marks
• Pattern numbers, artist initials, country names, and retailer labels
• Cracks, chips, stains, repairs, and areas of wear

Record exactly what the mark shows

Write a literal transcription before searching. Preserve punctuation, capitalization, spelling, numbers, crowns, animals, shields, and other devices. Note whether the mark is under the glaze, over the glaze, impressed into the body, hand-painted, transferred, or attached as a paper label.

Color and technique can matter, but photographs and lighting can distort them. Record uncertainty with brackets or question marks rather than turning a faint letter into a familiar brand name. Search more than one possible reading when the mark is incomplete.

Identify the ceramic body and decoration

Look at the exposed body at the foot rim or a pre-existing chip. Earthenware is generally more porous and can range from cream to red or buff. Stoneware is dense and commonly gray, brown, or light colored. Porcelain is vitrified, usually pale, and may appear translucent at a thin edge, though not every porcelain object is visibly translucent.

Record the glaze texture and color, whether decoration is hand-painted, transfer-printed, molded, gilded, or applied, and how the foot was finished. These features help test whether the object is technically plausible for the maker and period suggested by the mark.

Research the mark as evidence, not a verdict

Search the exact wording in quotation marks, then add the object type, city, pattern number, or distinctive symbol. Compare museum collection records, maker archives, reputable reference books, and dated trade material. A manufacturer may have changed its mark many times, and a retailer or decorator can appear alongside—or instead of—the actual maker.

Marks have also been copied, revived, and used as homages. The Victoria and Albert Museum notes that identifying marks can be useful but may be uncertain or copied. Treat an online image match as a lead, then compare the entire object and look for a documented date range.

Inspect condition without cleaning away clues

Check the ceramic before any cleaning. Cracks, flaking glaze, unstable gilding, old adhesive, overpainting, and previous repairs can worsen with water, solvents, or pressure. Canadian Conservation Institute guidance recommends careful inspection and conservative handling because ceramic and glass objects can be more fragile than they appear.

Do not sand a foot rim, scrape a mark, use bleach, soak the object, or apply abrasive powders. Surface dirt, old labels, and repair materials may be historically useful. When the surface is unstable or the object may be valuable, ask a conservator before cleaning.

Build a defensible identification

Summarize the proposed maker, place, date range, material, technique, and pattern, then list the evidence for and against it. Distinguish what is visible from what is inferred. Keep links or page references for each comparison so another researcher can repeat your work.

A mark may narrow origin and age, but value also depends on condition, rarity, scale, decoration, provenance, current demand, and realized sale prices. Antique Snap & Identify can provide a fast photographic starting point; use the guide, museum records, and an appropriate specialist to verify high-stakes conclusions.