Germany and Italy have been prodigious suppliers. The colored enameling, being less desirable, has not been produced in large quantities, but some is around. The Jefferson Glass Company sold enameled ware in the early 1900s, but their designs seem to be limited to flowers. It's possible that American decorators produced some of these early pieces. Its long popularity testifies to the natural charm and artistry of this ware.
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A special thanks goes to Oscar Ghebelian of Indian Head, Maryland, for his assistance and for providing the beautiful cranberry vases. Mary Gregory worked in the lamp decorating department and this lamp is a good example of the type of painting she would have executed. Cherubs were a popular English and French decoration. Mary Gregory enameling was almost always done in matching sets. The quality and style suggest they were made in the Stourbridge area of England about 1880.