Enamel has been used in decorative arts since at least the Middle Ages. It was especially popular in Europe and Asia in the 18th and 19th centuries. With this in mind, it may sound like an unlikely medium for the 20th century. But modern art embraces the unexpected.

Karl Drerup, an artist who trained in painting, illustration and ceramics in Berlin and Florence, then emigrated with his wife in the 1930s to escape the rise of fascism, started making enamels in New York in the 1930s. Later, he would call himself "the first one in New York who made any enamels at all." That may have contributed to his success; the Metropolitan Museum of Art purchased one of his decorated bowls in 1940.

Drerup's enamels have a distinctive style with vibrant, abstract scenes of natural elements or human figures in bright colors, like this copper plaque called "The Merry Makers" that sold for $2,750 at a Rago auction.

Q: I need a price to insure an 1870 bisque figurine. It was listed in your 2015 price guide on Kovels.com for $45. It was not listed in later price guides. I find it hard to believe a bisque figurine that was almost 150 years old in 2015 was worth so little. How can I find the current value for insurance purposes?

A: The value of your figurine depends on the maker, decoration, size and condition more than on its age. An unmarked bisque figurine is not worth as much as a figurine by a well-known maker. If you want to insure your figurine, contact your insurance company to see if they require a written appraisal. In that case, your figurine would have to be seen by a licensed appraiser to determine the value. The prices listed in Kovels' Antiques & Collectibles Price Guide are new each year, not "updates" of entries that were listed in previous years. Prices are from completed sales in auctions, stores or at shows. A few "asking" prices are included.

Q: My mother used an electric Simplex Model 5-463 mangle to iron sheets and pillowcases. It was made by the American Ironing Machine Co. of Algonquin, Ill. It's in fairly good condition and works very well, though I've never ironed anything with it. Do you know what its value might be?

A: The American Ironing Machine Co. was founded in Chicago in 1905. It made rotary ironers (mangles) and other laundry equipment for home, commercial and institutional use. Early ironers were powered by electricity or gasoline engines. The machines were made by Peter Brothers Manufacturing Co. of Algonquin, Ill. The two companies merged in 1920 and continued to operate as the American Ironing Machine Co. Your ironer was made before 1946, when American Ironing Machine Co. became the Simplex Division of Barlow & Seelig Manufacturing Co. Rotary ironers were popular for home use from the early 1900s to the 1940s or '50s, but interest faded after permanent press fabric became common in the 1960s. New rotary irons are being made and sell for high prices. Some "used" mangles sell for about $50 and others are listed for over $100.

Q: I have some china and cannot find the stamp it has anywhere. Is it real? I was wondering if you can identify it.

A: Your piece appears to have two marks: a green crown with the words "Royal Vienna" and a blue mark that resembles the shield-shaped mark, also known as a "beehive," associated with the Vienna Imperial and Royal Porcelain Manufactory. The "beehive" mark, so-called because of its resemblance to a beehive when turned upside down, was first used in 1744. Early marks were made in red or blue underglaze or incised on porcelain pieces. After 1749, the mark was always made in blue. However, it has been copied or faked by many other makers. Many porcelain companies in Europe and Asia have made reproductions of Royal Vienna pieces, complete with a reproduced beehive mark. Despite what some online sellers may claim, authentic "beehive" porcelain from the Vienna Imperial and Royal Porcelain Manufactory is never marked with "Vienna" or "Royal Vienna." Your piece may have been made with a Royal Vienna mold, but it is a later copy, not an authentic piece. Sometimes pieces like these are described as "Royal Vienna style."

Q: I have a lot of paper money and coins and would like to know what they are worth.

A: It takes a specialist to determine the value of coins and paper money. A numismatics (coin collecting) club, dealer or auction house may be able to help you. Some are listed in the Kovels.com Business Directory. The American Numismatic Association, www.money.org, would be a good place to start.

TIP: Repairs on standing figures or pitchers should be made from the bottom up.

Terry Kovel and Kim Kovel answer readers' questions sent to the column. Send a letter with one question describing the size, material (glass, pottery) and what you know about the item. Include only two pictures, the object and a closeup of any marks or damage. Be sure your name and return address are included. By sending a question, you give full permission for use in any Kovel product. Names, addresses or email addresses will not be published. We do not guarantee the return of photographs, but if a stamped envelope is included, we will try. Questions that are answered will appear in Kovels Publications. Write to Kovels, (Name of this newspaper), King Features Syndicate, 628 Virginia Dr., Orlando, FL 32803 or email us at collectorsgallery@kovels.com.

CURRENT PRICES

Current prices are recorded from antiques shows, flea markets, sales and auctions throughout the United States. Prices vary in different locations because of local economic conditions.
Movie camera, H-8, 8mm, holds 100-foot, 50-foot and 25-foot spools of double-run film, Tri Focal viewfinder, three focal lengths, Paillard-Bolex, 1961, 8 1/2 by 3 by 6 inches, $85.
Cut glass decanter, square base, raised swirl on stopper and sides, etched leaves, notched corners and handle, 8 1/2 inches, $160.
Chandelier, 14-light, Brutalist, oblong body, 14 tubular light fixtures, refracts different colored lights, painted metal, 20 by 30 by 25 inches, $190.
Toy seal, Robby, head raised, brown fur, white underside, googly eyes, plush nose, whiskers, stitched flippers and tail, button and tag on flipper, Steiff, 15 by 32 inches, $265.
Walking stick, silver knob, raised flower and leafy scrolled garland, hallmarks, Gorham, 19th century, 35 1/2 inches, $290.
Cupboard, Anglo-Indian, fruitwood, two paneled doors over two side-by-side drawers, shaped apron, ebonized inlay, turned legs, late 1800s, 81 by 56 1/2 by 21 1/2 inches, $600.
Pottery vase, Santa Clara Pueblo, engagement pot, blackware, knotted handle, incised geometrics, signed, Helen Shupla, 8 by 7 inches, $720.
Rug, Ersari, Afghan, runner, blue ground, orange, ivory and cobalt medallions, triple border, 11 feet 8 inches, $1,025.
Silver tray, Persian, rectangular, center village scene, two incised leafy garland borders, repoussé rim, figures, flowers in corners, 12 1/2 by 16 1/2 inches, $1,140.
Advertising sign, "Dog 'n Suds," red lettering, cartoon dog's head with chef's hat and bow tie, hot dog and mug of root beer, yellow ground, diamond shape, tin, 16 by 16 inches, $2,880.