are the marks on the inside or the outside nick? I've had something similar for a year or two, with the marks on the inside in relief, and I thought at first it was a Sowerby glass, but don't think I found it in the CD catalogues.
They're very chunky things - you could fell half the pub if one was thrown.
Taking a bit of an educated guess I would probably go for c. 1900 or a tad later - such marks I don't think I've seen on older glasses, but could be wrong.