I haven't tried it, but the Black Label key looks way too thick for a vintage razor. Load the blade into an empty Chick key, it's easy. The only other blade I know of are the Schick Prolines. No key on those, so see above. I haven't tried those because I am happy with the other choices.
-----
It’s a lot more fun being 20 in the ‘70s than 70 in the 20s’ - Joe Walsh
It’s a lot more fun being 20 in the ‘70s than 70 in the 20s’ - Joe Walsh

