Downsizer,
Are you talking about junior ranks or officers in the 1960s? I joined in the 90s and the officer pay spine certainly had annual increments then until gp capt I think when they became biennial. I believe the ranks were on bands but received a separate allowance for time served. A look in one of the old AFPRB reports would confirm.
Edited to add - they shouldn't be surprised if people do PVR over pay if this goes ahead. By reducing everything to financial terms and the main effort being to cut costs and save money above all else, they have monetised a way of life and turned it into a job dominated by numbers. Don't be surprised if people decide the numbers don't finally stack up.