Pyrex - Summer Impressions - Blueberry

This pattern is known as Blueberry, and is part of the Summer impressions pattern. These are marked as #1410, 300ml, Pyrex on the bottom of the mug. It's a diagonal handle style mug. The blue flowers and leaves are originally a dark navy color.

http://www.pyrexlove.com/summer-impressions-blueberry-diagonal-handle-mug-1410/glassware/