Polychrome is a term used for items which have multiple colors as opposed to monochrome which is used to describe black and white or tones of one color.
Below are some examples and price guides of Art Nouveau polychrome antiques including a Meissen porcelain group and a French metal book rest.
Meissen Porcelain Group “Catch of the Nymph”,Germany, late 19th/ early 20th century,polychrome enamel decorated and modelled with a merman seated on a wave and holding a net with nymph at one end, underglaze crossed swords mark, lg. 15, ht. 8 inches
Sold for US$5,000 at Louvre Antique Auction in 2023
Art Nouveau vase, Montigny-Sur-Loing, signed below, France c. 1900, ceramic, model no. 448, round flattened body on four feet, polychrome painted with water lilies and herons respectively, small firing cracks, h. 26 cm
Sold for €190 at Historia Auctionata in 2021
Antique pair of Art Nouveau iron polychrome curtain rod finials, each in the form of a flower.
CIRCA: Early 20th Century
DIMENSIONS: Diameter: 3.25″ Depth: 4.5″
Sold for US$75 at Akiba Galleries in 2023
French Art Nouveau polychrome metal book rest with owls. Early 20th century. 4 1/2″ x 9 1/4″ minimum w x 16 1/4″ maximum w x 6 1/2″ d
Sold for US$225 at King Galleries in 2023
Russian silver creamer and cloisonne enamel sugar bowl in Art Nouveau style. Moscow, 1894 Conical shapes, decorated with polychrome enamel patterns. Spectacular handles of flowering shoots form a dynamic and recognizable modern silhouette. The sugar bowl has a flat lid with matching decor. On the handle there is an MC mark in an oval, presumably from the workshop of Maria Semenova, a city mark and a double-headed eagle. Assay master: Alexander Alekseevich Smirnov. Signs of wear. Total weight: 736 g. Width: 8cm, Height: 13cm, Depth: 19cm, Weight: 0.736kg, Condition: Good, Material: Silver 84, Cloisonne enamel, Gilding
Sold for €2,600 at ANTIQON in 2023