Vintage Pyrex Amish Butterprint Mixing Bowl Set

Selling a set of vintage Pyrex mixing bowls featuring the Amish Butterprint pattern: 2.5 qt, 1.5 qt, 1.5 pt. These bowls are in great shape inside and out, no chips and the colour is strong. The only caveat is that the middle size 1.5 qt has a grey/black line circling the bowl, see picture, someone might be able to buff this out. They would be a charming addition to any kitchen!