I see a similar model  to Lucille Ball’s antique clock on eBay this week:

Lucy had a clock just like this one – click the picture above to go to the ebay listing.
The Ansonia “Rainbow” ceramic clock by Royal Bonn was produced in several colors. The photos showing Lucy’s clock are B/W so we can only guess at the color.

Related Post: http://www.50slucy.com/lucys-ansonia-royal-bonn-clock.html