It may be the Wittner chin rest that Michael recomends in his book (page 65). It looks a lot like the drawing in the book but not exactly. I believe the name did start with a w. I can check with the violin shop when they’re open next, which will be Tuesday.
The one I’m using is a Zitzman. The luthier at Old Town Violins in Lexington, KY recommended it after seeing my violin hold. I took a picture to try to post here but am tech challenged and couldn’t figure out how to do it on my iPhone.
What chin rest you should use depends on your physic. Do you have a long neck or a short neck? If you take of the shoulder rest and look straight, the chin rest should not be too far from your chin. You don’t want to have a lot of space because you could be bending your head too far forward and put tension on the back of your neck, or you could lift your left shoulder too high to compensate.