£118.50 in 1975.... looks like that would be £850 in todays money adjusted for inflation. 1975 UK average earnings - say £2400 per year - so the watch was about 5% of average earnings. 2019 UK average earnings - say £30000 per year - so 5% would be £1500 (same ball park) Actual current RRP £4000 = 13% of current average earnings. Looks like a good investment :0)