For extra info: One reason I believe the date letter is a "C" and not a smoothed "V" is that the canes appear to be from the Strathearn or Vasart companies and probably travelled with some of the workers when Perthshire Paperweights was first started. Had it been a "V" date cane then by that time much crisper and differently coloured canes, being a hallmark of the development of Perthshire Paperweights, would have been used.
Unless anyone knows differently, of course.