I just picked up the Rocket on the left at an Antique Mall and when I got her home I was giving her the look over when I noticed it wouldn't fit in my case. I thought that was pretty strange, seeing as they're the exact same razor. So I looked a little harder and I found what looks to be some sort of 'notch' sitting below the endcaps, directly in the middle where everything 'crimps' together. Does anybody know what this is all about? I found it to be very interesting, and would like to know if anybody has any knowledge as to what it is/why it's there. Either way, I think it's very cool!