There were two issues for the navy Players Club card, the 6th and 7th issues that described the difference as light and dark grey in the shading behind "Silver Star" but in reality there are a multitude of color variations of those cards. It didn't make sense to try and pick two color variations and call them 2 different issues when in fact that are a lot of color variations of those cards. So to make things simpler I've combined the two issues and renumbered the 8th issue as the 7th issue. I still personally save different color variations so I'll continue to do the same.
This is the card I'm talking about...