What is AAT?
The Art & Architecture Thesaurus (AAT) (r) is a structured vocabulary for generic concepts related to art and architecture. It was developed by The Getty Research Institute to help research institutions become consistent in the terminology they use.Learn More
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Description
Primary Description:
Colorless lead optical glass, cast, cut, ground, and polished, reflective coating; assembled, laminated. Two cylindrical elements, cut at and angle at the top, with a colored reflective coating applied to the cut and applied disc surface. The coating reflects two colors: a golden amber and green. "Bole" is a word commonly used in botany, meaning tree trunk.