This is a gorgeous bone china blue and white floral chintz mug by Maxwell Williams in a pattern called Antique Blue with a pretty pedestal shape.

The bone china mug measures 4.25 inches by 3.85 inches in diameter.  The mug is in very good used vintage condition with no chips or cracks.  Made in 2005 in China.

There is a bit of discoloring inside, as shown in the photo.

I just love chintz!