Old California porcelain baby dish food warmer, pink and blue ironstone china

Vintage baby dish made to fill with hot water to keep baby's food warm - this is heavy ironstone porcelain with a rubber bottom, about 7 1/2" in diameter.

The china has some scratching and utensil marks, and the rubber is cracking and discolored. Sounds worse than it looks, this is a nice old collectible piece without chips or cracks.