Interesting, that the superior Kryptonite peoples still used rockets to send Superman to Earth.
I was six when I got to see this serial at the local Saturday Matinee. I recall turning down Ice Capades tickets in favor of what happens next on the Superman serial. Now, I see all those cheesy effects but that guy who played Superman was my Superman guy. All those other guys who played superman were by comparison, mere actors, imitating my guy.
The year is 1948 for the production of the serial but I saw it in 1952 and this is THE Saturday Matinee Superman serial that kept kids my age in rapture as we wondered why the ten and twelve year olds in the same theatre were laughing.
We of the six to nine year old bracket ignored the giggles. To us, this was serious stuff.