A hard-to-find drainer is part of this Cambridge Glass Company #920 "Butter and Cover with Drainer" referenced in the company's 1930-34 Catalog.
This transparent pink set is from the Round Dinnerware Line. I've only seen the drainer in photographs until I found this piece.
The butter base measures 8" in diameter and has the company logo C within a triangle. The lid with keyhole handle measures 4" high when placed on the base. The drainer sits inside the base and has a hole in the center.
There are no chips, cracks or fleabites. No wear on the bottom and just a few very faint surface marks.
Packed with care to assure a safe arrival.