Grueby Pottery Matte Green Vase (Wilhelmina Post)

Grueby Faience Company of Boston produced pottery between approximately 1894 and 1920 that defined the American Arts and Crafts aesthetic in ceramics. Their distinctive matte green glaze became so influential that virtually every other American art pottery manufacturer attempted to replicate it, and the originals from Grueby remain the standard against which all Arts and Crafts pottery is measured. Vases decorated by named artists, particularly Wilhelmina Post, represent the highest achievement of this tradition.

William Grueby and the Matte Glaze

William Henry Grueby founded his pottery in Boston after working at several tile and terra cotta firms. His innovation was the development of a matte glaze with a distinctive organic quality: thick, slightly uneven in coverage, with the color of vegetable life, somewhere between cucumber green and mossy forest floor. The glaze was achieved through specific firing conditions and clay body composition that Grueby protected as a proprietary secret.

The Grueby matte green was unveiled at the 1900 Paris Exposition, where it won a gold medal and attracted immediate international attention. American interior designers and collectors seized on it as the defining surface treatment for the Arts and Crafts interior, and demand for Grueby pottery grew rapidly through the early 1900s.

The pottery produced vases, tiles, jardinieres, and lamp bases. The tile production became the most commercially successful part of the business, but the vases are what collectors most prize today.

The Decorators and Wilhelmina Post

Grueby employed a staff of female decorators who hand-applied the organic decorative elements that distinguish the finest pieces. The decorators modeled leaves, buds, and flowers directly onto the thrown vessel before glazing, creating the characteristic low-relief decoration that defines Arts and Crafts pottery aesthetics.

Wilhelmina Post was one of Grueby's most skilled and prolific decorators. Her pieces are identified by incised initials on the base ("WP") or sometimes a fuller signature. Post's work is recognized for its particularly crisp modeling of organic forms, with well-defined leaf forms that retain their shape through the glaze firing.

Pieces decorated by named Grueby artists command significant premiums over unsigned or initials-only examples. Post's work, along with that of decorators like Ruth Erickson and Gertrude Priest, represents the top tier of the Grueby market.

What Makes a Great Grueby Vase

Collectors and dealers assess Grueby vases on several criteria:

Glaze quality: The ideal Grueby surface is rich, even, and the correct color. "Cucumber" green is the most prized; yellow-toned green or thin, washed-out examples are less desirable. Exceptional examples show micro-organic surface texture that rewards close examination.

Modeling: The applied decoration should be crisp, with well-defined forms. Leaves that retain their three-dimensional form through firing rather than slumping or blurring are premium.

Form: Grueby produced several recognizable vessel forms. The most desirable are the tall, shouldered vases with organic neck treatments, and the ovoid forms that showcase both shape and decoration equally.

Size: Larger examples (over 8") command premiums over smaller pieces, all else equal. Exceptional large vases (10"+) are among the most valuable pieces in the market.

Condition: Chips, cracks, and repairs significantly affect value. Even hairline cracks that are invisible without careful inspection can reduce value substantially in the top tier of the market.

Value Guide

A Sotheby's auction in 2020 set a record for Grueby pottery when an exceptional vase achieved a price that astonished the market, demonstrating that the very finest examples carry prices competitive with other Arts and Crafts furniture and ceramics.

Authentication and the Base

Authentic Grueby pottery is typically marked on the base with the Grueby Faience Company mark, which evolved over the company's years of production. The most commonly seen marks include a circular stamp with "GRUEBY FAIENCE CO. BOSTON, U.S.A." or a lotus flower mark. The decorator's initials or signature should also appear if applicable.

Fakes and misattributions are less common with Grueby than with some other American art pottery, but pieces attributed to named decorators warrant careful examination.

The Arts and Crafts Context

Grueby pottery was made during the same period that produced the furniture of the Roycroft shops, the metalwork of Dirk van Erp, and the tile work of Ernest Batchelder. It belongs to a coherent artistic movement that rejected industrial mass production in favor of hand craftsmanship and natural materials. The best Grueby vases are not just beautiful objects but manifests of a philosophy about how beautiful objects should be made.

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