This 2-part divided crystal mayonnaise or condiment bowl is in the 1950s Century pattern by Fostoria Glass. It measures 6-1/2 inches diameter by 3-1/2" high. The mayo comes with two ladles, though I left one out of the photos. My photos aren't great due to glare and reflections, but the bowl and both ladles are in crystal clear, perfect condition with no damage.
Fostoria Century Divided Mayo With 2 Ladles