Back in the 1960s and 1970s, as young stewards we were expected to wear Christian Dior, Lanvin or Armani neckties for training or during night stops when required to do so. Any lesser known brands were "prohibited" by our seniors. We were told to have some "class" and not to wear cheap ties as it would not be good for our image. If we were to wear so called "inferior" ties for functions, the seniors would cut our ties.
As for the briefcases we carried on flight, they must not be anything lesser than the mighty Samsonite which was the "IN" thing back then. I once had my Made-in-China briefcase kicked by a senior on my flight that the handle was damaged. In order to please my senior, I was forced to buy a Samsonite from HKG after the flight.