It was less than that for Cabin Crew. I was flying with a cadet from that era the other day. After graduating, there were no flying jobs, so they became CC for a couple of years. When they finally got their F/Os jobs, they took quite a significant drop in take home pay due to the very generous CC allowances at the time. All very different these days!
The average salary in 1959 was about 950 quid pa. The average salary today is about 38000 quid pa. So a BA B744 training Captain would be on about 190000 if the status has remained. I have to much time on my hands I know.