I was so excited yesterday when I stumbled across the cosmopolitan Salton warming tray. I finally have the 3 pieces!
This is one of those weird pyrex pieces because there are versions out there that have pyrex on the bottom and with salton on the bottom. I have both versions. They are completely identical except for the name on the bottom. Salton makes warming trays and Pyrex... well you know. 
I love this pattern. 