I got this case in a large lot, and I'm not sure which razor it belongs to. I have a feeling my fellow B&Bers will help me..
My limited knowledge in cases would make me think this is a case for a Blue tip Rocket however, the case doesn't exactly match on Mr-Razor's website... Also, the blue tip superspeed isn't the same blue...
I think these dark blue cases were for the Super-Speeds with the black plastic knob. Here is one with a date code W-3 (1951). And also for the late 40's Super-Speed.
I have got a complete set with 40's Super-Speed dated Y-1 (1953) with the some case. Sorry but I don't taken photographs of it.
Correct me if I'm wrong, but I read this thread as well as saying the case is for a black tip 1940s superspeed or for an early 1950s flare tip superspeed. I don't think any of the normal late 1940s model superspeeds were in this case