Identification of carnival glass is very difficult task. Most of the manufacturers did not include a maker s mark in their product, while the others did so only for part of the time they produced the glass. To identify this glass, one has to match patterns, colors, sheen, edges, thickness, and other factors from old manufacturer s trade catalogs, other known examples, or other reference material. Since many manufacturers produced close copies of their rivals popular patterns, identifying it is a challenge even for an expert.
Blue Carnival Glass
