The Numismatic Bibliomania Society



The E-Sylum: Volume 20, Number 15, April 9, 2017, Article 17


Dick Johnson submitted this entry from his Encyclopedia of Coin and Medal Terminology. Thanks. -Editor

Ambassador Bridge plaquette

This vertical plaquette was originally created as a plaque in 1929 by Jonathan M. Swanson which was mounted on the American side of the Ambassador Bridge which connects Detroit and Windsor, Canada. A smaller size – 4 x 2 3/4-inch -- was reduced from that large plaque model. It was struck in 1930 for the bridge’s opening celebration. As the size of plaquettes are greater than 6 inches they are more likely to be cast instead.

Plaquette. An art relief smaller than eight inches (or more precisely, 20 centimeters), which bears a bas-relief design. While plaquettes are usually considered square, rectangular, or nearly so, they appear in a variety of shapes, and can be somewhat more creative with silhouetted, open work, sunken relief, or other sculptural techniques. Plaquettes do not share the restrictions of a round medallic item. In effect, plaquettes are the most artistic – and because they can be easily mounted – the most utilitarian form of medallic art.

Unlike PLAQUES, which are always uniface and larger than eight inches, plaquettes occasionally have a reverse design, particularly those that are diestruck since they are struck with two dies. Otherwise plaquettes have been made by every method that can reproduce a bas-relief design: many forms of casting, electroforming, repoussé, niello, and forging.

But the casting technique, most often used in making early plaquettes, is in continuous use to the present. By making a negative wax impression from a model, pattern, or even an existing plaquette, it could then be cast in the positive. This would usually be cast in bronze. Infrequently, however, plaquettes were made in silver or lead – and much later – in iron, white metals, aluminum, and in the Orient, in pot metal.

After casting, the items were often CHASED, casting imperfections removed and detail sharpened, termed CAST AND CHASED. Most relief items were given a PATINA, or, infrequently they were gilded or silverplated. The makers were the same artists that made medals, undoubtedly because of their experience working in bas-relief and casting in bronze. For collectors and curators it is necessary to determine the STATE of the casting, whether a plaquette is a CONTEMPORY cast, or a second or subsequent generation. Like cast Renaissance medals, a plaquette must be accurately measured to determine this state (see SHRINKAGE).

In modern times the relationship between plaquette and plaque is more than incidental. Plaquettes have, in fact, been reduced from the same model used for a plaque. A DIESHELL is made from the model or pattern which is then pantographically reduced to cut the plaquette die; meanwhile that exact same pattern can then be used to make the plaque the exact size by bronze casting. Often the plaquettes are distributed at the time of the dedication of the plaque after it has been installed.

Mounting plaquettes. Uniface plaquettes were sometimes intended to be mounted on another surface. Because of their size they could be mounted on furniture, desk boxes, book covers, bases of small statues, other objects where an intimate decoration was required. Or, if not intended to be mounted on a flat surface, plaquettes would be provided with a support on the back to be able to stand upright on a table, mantel, altar or shelf. The PAX of the Catholic Church, intended to stand upon the altar, is an example of a plaquette with such a support.

The back of a plaquette was usually left untreated, particularly if intended to be mounted. But just as often it was finished, or a backplate was attached.

History of plaquettes. Early plaquettes were reproduced and this art form spread from their birthplace in Italy – exactly like Renaissance medals – across the Alps to Germany, France, the Low countries and the rest of Europe. Plaquettes may have, indeed, predated the art medal. Some cast pieces in the 12th and 13th century in square or rectangular shape could meet the above definition and be considered plaquettes (particularly those mounted on the bases of statues).

When Pisanello created an entirely new art form in 1439 by casting the first ART MEDAL in lost wax, he also set the stage for the development of the plaquette as a separate object made by the same technique. Thus the plaquette closely paralleled the development of the art medal. Certainly the artistic treatment and strongly religious themes were similar for both classes of art objects.

References: CLASS 01

NC5 {1951} National Gallery of Art (Kress collection).
O11 {1944} Middeldorf.
O12 {1959} Salton. Archives International sale 40 cover front

Wayne Homren, Editor

NBS ( Web

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