6 7/8" - 5 5/8" X 5 3/4" (175mm - 143mm X 146mm)
Picture Courtesy Bob Berry
This is most likely Pyrex glass but the country of origin is not known for this item.
Note: Original CD assignment from Glass Insulators From Outside North America published in 1993 by Marilyn Albers & N.R. Woodward.
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