Re: 1970's black-and-white
Was that one of those companies that took Eastmancolor movie stock and packed and sold it for still photography use?
Nope. ORWO actually used different process and different chemicals for colour. So I do not quite see how it could have "repacked" Eastman-Kodak.
Black and white was of course the same, but it is the same for any film AFAIK.