Curious if this topic was discussed before - but I noticed when looking at another copy of Wild Gunman that the top label is not in the middle of the top label like the other is. Pics - https://goo.gl/photos/jaCio9ZVQPD...
My guess is that the printing or cutting was off center. Compare the front of the labels. Is there more space on the bottom of the label on the unaligned one? In the world of Magic the Gathering it is very difficult to find perfectly centered cards from the original sets. They could have had similar problems with alignment when they first started printing and cutting the labels.