I stopped into a goodwill near my house and they said they get them from time to time. But I found these 2 in what would best be described as "2nd hand" shop. They had a large amount of random mismatched cutlery in the window so I asked them if they ever got "vintage staright razors" and she led me to a case that had 3 of them.

I am going to check some of the antique stores here in Brooklyn and see what I find.