Garden Mums - Fenton
This is the pattern from which Fenton made many of its advertising premiums. Some pieces have enameled lettering--presumably a process that was affordable for shorter manufacturing runs.

Found, only in amethyst, in flat plates, handgrip plates and ice cream shaped (or round) bowls.

To the right is a page from The Encyclopedia of Carnival Glass Lettered Pieces, by John D. Resnik, published in 1989. To see the entire book, click on the link.