Episode Description: Endora gives Darrin a futuristic car from one of his magazines. Unfortunately he can't keep it because it's stolen.
I love this tea service of Sam's. It is the Franciscan "Encanto" in Magnolia. The same set was used in the Kim Novak film Bell, Book and Candle (1958) - source (with photo). I haven't had a chance to watch the movie yet but here is a post I found with photos.
Here are some photos I found of the pieces up close. These are edged in platinum:
This cup looks like the color shown above.
"Gladding, McBean & Co. started making fine china under the name of Franciscan in 1941 until the early the 1950s. One of their popular patterns was Encanto which was made in several pleasing soft colors" - source. Replacement pieces can be purchased here.
Creamer in Dawn.
Teapot. There appears to be a similar design that was less "squat."
Cup and saucer