Telling the Age of Glass

 QUESTION: I just started collecting antique glass. Unlike antique ceramics, most glass has no mark, so it’s really difficult to tell not only the maker but if it’s even old or not. How can I tell if a piece of older glass is, in fact, old? 

ANSWER: Identifying a piece of older glass is truly a challenge. Because most glass doesn’t have a maker’s mark, about the only way to tell anything about it is by studying its form and decoration. 

Of all the items for sale on the antique market, glass is probably the hardest to identify as being old. In fact, many of the old patterns have found new life in today's households, so much so that manufacturers scramble to fill department store shelves with reproductions. 

Pressed glass frequently is advertised as having been made recently from old– meaning 19th-century molds. However genuine the molds, the resulting glass cannot be compared with the original pieces. Both the glass and its color are somewhat different. The present-day manufacturer who uses 19th-century molds doesn't go to the trouble of mixing a batch of glass according to 19th-century formulas. As a result, his clear glass isn't an exact counterpart of last century's, and the red, green, blue, or other colored glass pieces rarely have the same tints and tones as the originals.

In addition to reproductions, many fakes are being made in pressed glass. One telltale sign of a fake is a slight difference in pattern. During the 1800's, variants of popular patterns became common, but a variant made by a glasshouse other than the one that introduced the pattern shows some alteration in the motifs or their arrangement. A fake, on the other hand, is an attempt to reproduce a pattern of the 1800's without bothering to copy every detail exactly.   

Twentieth-century imitations of the popular Wildflower pattern, for example, have fewer leaves and flowers in each motif. The band of pressed daisies also is narrower. Moon and Star, a pattern that probably wasn't made before the 1880's, can be confused with an inaccurate contemporary version in which the sawtooth-like cutting around the moon is smoother and flatter than in the originals. As a matter of fact, any colored Moon and Star pieces are definitely fakes, for the 19th-century pattern was offered only in clear or clear and frosted glass. Dimensions of pieces also differ, but this is impossible to judge unless you have access to an authenticated 19th-century piece.

Pattern glass was made after 1850 in large sets for the table. Reproductions of even the most popular patterns, however, seldom include the entire set. Goblets are the most widely reproduced pieces, with tumblers, mugs, salts, match-holders, and other small pieces likely in some patterns. Considerable lacy glass with its stippled background, first made by the Boston and Sandwich Glass Company in the 1830's, also is being made now. Lacy glass never was made in a complete table set. Other specific clues for distinguishing between antique pressed glass and this century's copies are discussed in the chapter on pressed glass.

Cup plates, which were generally used until about 1850, and dolphin candlesticks, which were made from the 1830's to the early 1900's, have been so popular that fakes and imitations found a ready market. Dolphin candlesticks made between 1900 and 1910 can hardly be classed as antiques yet, but most of the late ones are much finer work than the more recent fakes and reproductions. Again, some dolphin candlesticks are said to be made from old molds, but the glass isn't the same quality or the color a duplicate of the original.

Dolphin candlesticks were made by many glasshouses, from the Boston and Sandwich Glass Company, which introduced them, to firms in Pennsylvania and the Midwest. The earliest Sandwich glass ones had a single square base. Then came the double square or square stepped base, also made at Sandwich and widely reproduced before World War II in the United States and Europe. Other glasshouses during the 1800's produced candlesticks having the dolphin shaft but with bases and sockets differing from those made at Sandwich. A hexagonal base, for example, introduced by a Pittsburgh glass firm in the 1850's has been reproduced widely too. There is also the petticoat dolphin with a high round base first made in the 1850's or 1860's. All styles were made in clear, opalescent, and some colors, also opaque white and opaque blue. 

Anyone who looks carefully should be able to recognize copies of dolphin candlesticks. Those made within the last 30 years have sharper, clearer details--fins in particular are sharper to the touch. The sockets, whether ribbed or petaled, usually don't flare outward. The glass is of poorer quality and the colors more garish. The proportions aren't so good either, for the dolphin is likely to be larger, and many of the copies are shorter candlestick

In spite of the large number of patterns in which cup plates were made in the 1800's, comparatively few are being reproduced. Since the originals were early pressed glass, the quality of the glass was good enough to give a bell-like ring when the little plate was tapped lightly. Reproductions or 20th-century imitations sound dead or dull.

A classic example of a fake, imitation, or reproduction that can confuse all but the most knowing is the Butterfly pattern cup plate, first made by the Boston and Sandwich Glass Company in clear and colored glass. The butterfly that gives the pattern its name stands out in the center against a stippled background. Flower sprigs encircle the rim and the edge is scalloped. During the 1930's, Butterfly cup plates were reproduced from a new mold that was not an exact duplicate of the original one. On antique Butterfly cup plates, the stems of the two leaves below each blossom are at least 1/s inch apart, but on this century's, the stems are almost opposite each other. One blossom on the old Butterfly plate has seven petals; all the blossoms on the recent plates have six. It's particularly easy to be fooled by a blue Butterfly cup plate, for this color as made in the 1930's  compares favorably with that of the 1830's.

Imitations of curtain tiebacks and furniture knobs also were made in quantity and sold cheaply  during the 1930's. Old patterns, including some of the Sandwich ones, were copied in both clear   and colored glass. Neither the quality of the glass nor the workmanship are any more comparable  than the colors to those made during the 1800's. The appearance of 19th-century milk glass are quite different. The slightest acquaintance with any piece of antique milk glass should enable a person to distinguish between the old and the contemporary.

Fakes aren't confined to pressed glass. Bottles and flasks, for example, frequently are made in imitation of typically American styles of the 19th Century. A "golden amber" bottle in the shape of a fish, made recently in Italy, "queen of the glass-making industry for generations," is not worth any more than its retail price. Only the amber fish bottles made in this country to hold Dr. Fisch's bitters are antiques. For holiday sale, 19th-century milk glass is still being manufactured in quantity, and many pieces copy or are reminiscent of the forms and decorations used during the late 1800's. However, the character and appearance are different.

To tell the difference between a 19th-century pressed glass goblet and a 20th-century reproduction or fake, a person must be alert to the patterns and pieces that are currently being manufactured. Equally important are a knowledge of the authentic motifs, as well as of their make-up, proportions, and placement to form the patterns, and the ability to judge the quality of stippling and frosting.

Cost prohibits the reproduction of cut glass as it was made throughout the 1800's. Its surface distinctions are the sharpness of the decorative motifs to the touch and the heaviness of the piece. 

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