If you enlarge the ad, you can see that the sub was sold by Honor House Products. So, I did the search and learned that the things were cheap and not representative of the ad. Further:
False advertising in comics | Freak Comics
What happened to the mail order companies of the ’50s such as Honor House Products, Helen of Toy and Norton Products (no, not the virus people)? Simply put: no one knows. I have done some rather intensive research in to this and haven’t been able to get any information. I have even emailed comic book companies and asked if they have any back information on the matter, and they don’t.
Most likely these companies folded as soon as people realized the garbage they were pumping out.
Mail order toy companies still exist, but they seem to be a little more forward and honest with what you get.
False advertising in comics | Freak Comics
I'll bet we could actually design and build one better!