Thanks to Melo King for this photo of 220 E. Congress. The sign says Studio 220, but there's also a business named Got All Your Marbles? that sells interchangeable marble jewelry.
Happy Thanksgiving to all of you mural lovers!
Update (August 4, 2013): Mark Fleming just sent another photo of this same mural. It seems to be in good shape (which quite a few murals aren't these days: many are being trashed by taggers... sigh). I'm guessing that its position above the store's window helps protect it.