Schick Lady Eversharp Injector Razor

Has anyone used them? Recently I was lucky enough to buy many NOS Schick Lady Eversharp Injector Razors( 34!). I haven't tried so far any Schick injector razor, so this is a good chance for me to try one! Also, which injector blades do you recommend? Can I use those two that come with the razor or after almost 50 years they can't be used?

Thanks in advance!