Q. The attached mark is on the bottoms of a teapot, sugar and creamer. I believe they are porcelain; they are decorated with rural scenes. I wonder if you can identify the maker and estimate their age and value.
A. This mark was used by Jaeger & Co. in Marktredwitz, Germany. Your tea set was made between 1900 and 1910; it would probably sell for about $125 to $135 for the set.
Q: Please provide your comments about this slipper chair; it has been in our family for years. I inherited it from my aunt.
A: Your Victorian rocker was made in the third quarter of the 19th century; it would probably sell in the $500 to $600 range.
... This isn't very easy to define except in the very general way that Harold Newman does in his "Illustrated Dictionary of Glass" (Thames Hudson). He simply states that art glass is "ornamental rather than utilitarian."
We will take a look at a few of the many types of art glass in order to seek a basic understanding of what qualifies.
Aurene Glass is a gold or blue iridescent glass developed by Frederick Carder at the Steuben Glass Works. It is usually marked either "Aurene" or "Steuben."
Bohemian Glass is either ornately overlaid or deeply engraved and has been made in Czechoslovakia or Austria for more than 400 years.
Cameo Glass is two or more layers of different colors with some layers cut away to form a picture or a design. Thomas Webb & Son in England is still producing some exceptionally fine pieces.
Burmese Glass is opaque, shading from greenish yellow upward to light rose at the top with either a dull or glossy surface. It was developed by Mount Washington Glass Co. and patented in 1885.
Loetz Glass is another gold iridescent glass similar to Aurene. It was developed in Austria by Johann Loetz or (or Lotz). After 1900 the company made black-and-white glass.
Galle Glass was developed in Nancy, France, in the late 1800s by Emile Galle. It was a complicated form of cut Cameo Glass utilizing several layers of cased glass. Fortunately for collectors, almost every piece is signed.
Quezal Glass was developed by Martin Bach and Thomas Johnson, former employees of Louis Comfort Tiffany. They produced an opalescent glass similar to Aurene and Tiffany.
Lalique Glass is one of the most eagerly sought of all art glass. His work is finely sculptured and usually acid etched. Early pieces are signed "R. Lalique." After his death in 1945, the mark is simply "Lalique."
It should be noted that these represent a very small portion of many forms of art glass. It is simply an attempt to delineate the quality workmanship and artistry involved.