Hope you don't mind if I ride your coattails. My Mother-in-law also gave us a bottle of White Horse. She had given us other bottles and brought two more over the other day. One of them was another bottle of Grand Ol Parr that I had recently posted about.
Our bottle looks very similar to yours as well, so hopefully you won't mind, I will post them as well with hopes that somebody will provide an answer.
The bottom one is a little blurry but says "26 Glasgow Scotland".