Hints: 

• Canes are typical Whitefriars type .
• Concentric pattern of single types is also typical of Whitefriars.
• The canes are right at the bottom with only a minimum clear ground below the canes.  The bottom is very concave.  See the enlargement for more detail.  This is a typical Whitefriars type construction.

• Hall "Old English Paperweights"
• Kulles "Identifying Antique Paperweights - Millefiori"
• Selman "The Art of the Paperweight"

Click on the picture to see a larger image.