Hello there here is another off the ten pence shelf that i picked up Saturday, it reminds me of a Georgian barrel spirit glass from a book i was reading recently "English Table Glass by Percy Bate" plate XL, it has no wear and a slightly concave base that has what looks like very fine arched lines across it like its been held against a grinding wheel but the base in concave so i have no idea how they have got there, there are no seeds, it's uneven in shape and thickness, Percy's photo's considering there 101 years old are much better than these i think i need to invest in a new camera.
It's 2 inches in height and 1 1/2 inches across the rim.