I was watching north by northwest today and noticed that at around 1h 3mins there is a scene where cary grant has a shave at a train station.
The guy next to him is using a straight razor, Cary grant is using what appears to be a tiny safety razor. It looks to be about half size blade wise and the handle looked to be about 2/3 of a toothpick.
Were these early disposable vending machine razors or something?