Why Are There Razor Blades In My Walls?

Do You Have This Weird New England Razor Slot? medicine cabinet with razor blade slot In the case of safety razors, these slot into the reusable housing Instead of thrown the razor away , or inserting a medicine cabinet with razor blade slot Medicine cabinets had a slot in the back to dispose of the blades that way This was done right up to and into the 1970's

medicine cabinet razor slot I live in a late 40's apartment building in LA with the original medicine cabinet intact and it has a slot for razors ( first time I have ever