The measurements are:

2" x 6"

This is a beautiful find!  I believe this to be a stoneware bowl, but I cannot find anything online.  If you know anything about this, please message us.  Considering its age and how long it's been around, the condition is pretty good.  There is some wear.  Please review and zoom in on each image for condition detail.  Refer to the item description for measurements.  The colors are amazing and the design is out of this world!  This is something anyone who appreciates or collects antiques would love to have!