Jeannette Glass Company manufactured the Windsor Diamond Pattern from 1936 to 1946. It was produced in the Crystal Clear like this butter dish and also in Green and Pink. A limited production of a few other colors were also made. It appears that the company designed this round butter dish with two different types of knobs; this tall spire like finial knob and also a shorter more rounded one.
The diamond pattern of the dome shaped lid makes it sparkle. The lid fits over a ridge on the base to keep it in place. The diamond pattern of the top spills over to the bottom of the two piece round dish giving the design cohesiveness. The base has a scalloped, almost saw tooth, edge. The dish is 6' across the base and 5" tall.
Since round butter isn't the norm anymore these dishes are often used today to serve cheese balls or shaped spreads.
Excellent Condition. The glass is clear without nicks, breaks, or scratches found.