This is a very pretty EAPG buttermilk goblet / open sugar. The pattern is called, “Blackberry Band”. The maker is unknown. According to the Early American Pattern Glass Society it was made in 1870.
This piece is in very good, used condition. It has no chips or breaks. it does have two TINY flakes of trash in the base of the glass. You can see them in the picture. That was a common occurrence during this time period because the glass making process was fairly primitive.
Take a look at the pictures, and if you have questions, please e-mail.