Treasure in the Basement?

While going through boxes of stuff that I have no reason to keep, I found this dish that caught my eye.  I have seen it many many times, but never really studied it.  So this time when I was serious about getting rid of stuff, I looked at this with a more discerning eye.

This bowl has markings on the bottom indicating Buttercup, then in the triangle Avalon, BALT, which I assume to mean Baltimore since that's where our families have lived for more than 60 years (my family has been here since the late 1890's or early 1900's, my wife's family came here later from Virginia).  The last marking is somewhat indecipherable.  It looks like F_ _ ENCE, the two letters in the middle being impossible to read.  Then there are two red letter markings on it, but I have no idea what that means.  Anyone out there in the blog world have any idea?  Is this bowl worth anything?  You can click on the pictures to see a larger view of them.

There is a small chip near the raised red floral design.