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How to read Roseville pottery marks

Published October 6, 2026 9 min read

Roseville pottery marks are the stamps, labels and molded script that the Roseville Pottery Company of Roseville and Zanesville, Ohio put on the bottom of its wares. From around 1937, every new line carried a raised "Roseville" script with "U.S.A.", usually beside a shape-size number such as 728-10. Earlier pieces carry an ink stamp, a paper or foil label, an impressed script, or nothing at all. And no mark proves age on its own: Chinese-made copies of the raised script were sold from 1996.

The Wisconsin Pottery Association, a collectors' group, puts the method in two words: bottoms up. Turn the piece over and the name is only one of the clues. The clay color, the glaze, the rim and the numbers are there too, and the WPA's advice is to learn to tie them to the mark.

What do Roseville pottery marks look like?

Roseville pottery marks fall into seven families: no mark or a paper label, the Rozane stamp or wafer, the Rv ink stamp, a small black paper label, a silver or gold foil label, an impressed script, and the raised script with "U.S.A." Dates below are from the Wisconsin Pottery Association's Roseville page (WPA) unless a cell names rosevillepottery.org.

Pencil or crayon numbers turn up too. The WPA says a few handwritten numbers under the glaze are common on ordinary Roseville. Trial glaze vases, by contrast, can be identified by lines of handwritten underglaze numbers and notes.

About that second source: rosevillepottery.org is run by The Kings Fortune LLC, which says it owns the Roseville trademark and describes itself as a modern studio making new porcelain tiles and gifts, not reselling vintage pottery. It is used here for its mark dates only.

Can you date Roseville pottery by the mark alone?

No. A Roseville mark gives you a window of years, not a year. The two reference pages disagree by a few years on several mark families, and you can check both:

If two careful sources cannot agree on the year a mark started, a listing that says "1938" because of the mark is a guess. Lines also ran across mark changes: the WPA notes Pine Cone turns up unmarked, impressed, and most often with the raised script. So date a Roseville piece in this order:

1. Name the mark familyRaised, impressed, ink stamp, label, wafer or none. That sets the window.
2. Name the lineMatch pattern and glaze to a line: Pine Cone, White Rose, Futura. A reference book can narrow the window to that line's years.
3. Read the shape-size numberOn in-mold marks from the mid-1930s on, it names the form and size.
4. Write a range, not a yearGive the mark, the line and a range such as "about 1937 to 1953".

What do the numbers next to a Roseville mark mean?

The numbers next to a Roseville mark are the shape number and the size in inches. The WPA's examples: 728-10 is a 10 inch form in the Silhouette line, and 991-12 is a 12 inch vase in the White Rose line. They are usually part of the in-mold marks used after the mid-1930s. Earlier numbers rarely appear on the pot, except now and then in pencil or crayon.

Some late pieces carry the line name too. rosevillepottery.org says many Mock Orange pieces, a pattern introduced in 1951, have "Mock Orange" in the mold beside the mark and shape number.

That number is your search string. Type maker, line and number, for example Roseville White Rose 991-12, and filter to Sold. eBay's completed listings search returns only items sold in the previous 90 days, per its Product research help page. The number keeps a small vase from being comped against a 12 inch one.

What if a Roseville piece has no mark?

An unmarked piece can still be Roseville. The WPA says most Roseville artware was marked when it left Zanesville, but some early artware, and some middle-period pieces that only had a removable paper label, are unmarked today.

No mark is not a verdict. The WPA's advice is to learn a maker from marked pieces first (clay color, glaze, rim, the shape of impressed numbers) so you know them when the mark is missing.

At the rack, ask two questions. Can you name the line from shape and glaze? Are you certain it is genuine? Two yeses, and you comp it under that line and list it as unmarked. Anything less, price it as unnamed pottery or leave it on the shelf. The same check works on an estate sale table, and estate sale sourcing for eBay resellers covers scoring the stop first.

How do you spot a reproduction Roseville mark?

A reproduction Roseville piece usually gives itself away on the base before the mark does. These tells are from a WPA article written for its 1999 show, so they describe imports up to that year:

• Clay color. Imports show white clay on the base. Roseville, like many Ohio potteries, used yellowish or buff clay.
• Feel and paint. Many imports feel sandy or coarse, where Roseville feels smooth and soft. Color on flowers and leaves is often sloppy and runs onto the body.
• Handles. Thick and clumsy on the imports.
• Inside. The first imports, from 1996, had unglazed interiors and a "Made in China" paper label that is easily removed. Later ones are glazed inside.
• Colors the line never used. Blackberry copies come in bright blue and mint green. Iris was made in sky blue, tan and pink, never green or dark blue.
• The wrong mark for the line. Donatello, Panel, Blackberry, Jonquil and Luffa with a raised script are reproductions. Those lines had a paper label or the Rv ink stamp.

Then the mark. The WPA says a raised "Roseville" with no "U.S.A.", a blank where it should be, or a faint one is probably Chinese-made. But the first imports had "U.S.A.", so its presence does not prove a piece is genuine. rosevillepottery.org shows import marks both ways, dated about 1990 to 2010.

A clean Roseville mark is not proof. The clay, the glaze, the paint and the inside of the pot are the evidence.

What looks like Roseville but is not?

Four things are not original Roseville Pottery Company ware, even when the name or town is close:

• Chinese-made imports with a copied raised script, above.
• Robinson-Ransbottom. A different company in Roseville, Ohio that has marked "Roseville, Ohio" with "RRPCo", often on large planters and garden pottery. The WPA says the two are unrelated.
• Keynote. After the 1954 bankruptcy, the name passed to Connecticut businessmen who made Keynote through 1956, marked "USA" and a shape number without the Roseville name, per rosevillepottery.org.
• "Experimentals." The WPA says almost all "Roseville experimentals" for sale are imposters: many are other potteries' production ware, and others may be casts taken from Roseville pieces.

What should you do at the rack with each kind of base?

Decide from what the base can prove. Rules of thumb, not a grading standard:

How do you check what a marked Roseville piece sold for?

Check eBay sold listings for the same Roseville line, shape number, color, size and condition, not active asks. A price range for a whole line is not a price for your piece. As a rule of thumb, read five matching sales, and only count the ones with damage like yours. The full floor method is in checking sold comps before you buy at thrift.

In the listing, describe the mark as it reads ("raised Roseville U.S.A. mark, shape 991-12") and give a range, not a year. eBay's counterfeit policy is plain: "If authentication can't be confirmed, don't list." A piece you think is an import does not go up as Roseville.

So the order at the shelf is short. Turn it over, name the mark family, find the number, then check the clay and the inside before you trust any of it. Roseville is one lane. For the rest of the cart, what to buy at thrift stores and what to skip is the category map.

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  Categories that earn a listing slot, and the 'wins' that sit on the table for weeks.