309 Colorworks shakers, bone glaze with plum and teal hand painted design; 6/4 square hole set. I bought these from a person who purchesed them at the factory in 1998. He said the owner told him that this pattern (and perhaps brushstrokes in general) was being discontinued. The hand painting work was too time consuming and inconsistent. This information provides a date for the use of the square milk can hole pattern on the 309 shakers.