First a bit of background. I am the program chair for our local wine tasting group for this year, and I have included a Taylor Vintage Port vertical tasting in our program this year. Port is not a category I drink very often, but I wanted to include this tasting for my own education to get to see the aging curve of vintage port over a long period. I decided on the Taylor 2000, 1992, 1977, 1970, 1963, and 1948 (two bottles of each) for this tasting in order to give a broad view from young to old. I sourced all of the bottles from reputable retailers in order to reduce the odds of fakes or improperly stored bottles, but I realize that anything is still possible.
Here is where my questions begin. I am very confident with appearance of the bottles from 2000, 1992, and 1977. Where I get confused is with the labeling of the older bottles. The 1970, 1963, and 1948 look so different from the others. The two 1970s bear the same label, but it is different from all the others. The two 1963s and the two 1948s appear to be bottled by different bottlers. The capsules on the 1963s indicate Corney & Barrow and Averys Bristol, and the 1948s indicate Grants of St James and I'm not sure of the other one. I know I will get questions about the different labels from our tasting group, and I want to be prepared with reasonable answers.
So, first of all, should I be particularly concerned about the authenticity of any of these, just based upon the labels? Secondly, is there a primer I can find somewhere about the different bottlers of the older Port wines? Also, approximately what year did Taylor's switch to 100% estate bottling?
Thanks in advance for the information!
Here are the pictures: (I can add more detailed pictures if that would help)