It looks it’s the other way around according to MyComicBookshop: Bouncing Betty was first (1956) https://www.mycomicshop.com/search?minyrmo=195612&maxyrmo=195612&p=6 Reply
It looks it’s the other way around according to MyComicBookshop: Bouncing Betty was first (1956)
https://www.mycomicshop.com/search?minyrmo=195612&maxyrmo=195612&p=6
Fixed, thanks!