Snap. Singapore from '69 - '73 everyone was still wearing OG's.Very late seventies I’d say.
In Guyana in 1975 and in Cyprus in 1976, we were issued with the olive green or OG trousers and shirts.
I left my battalion and the army in late 1977 and they went off on a two year posting to Hong Kong in early 1978.
Photo’s of the lads in Hong Kong show them wearing OG’s and later on during the Hong Kong posting, tropical DPM.
So I’d say timewise issued, definitely a little later than the 60’s given that 1RGJ must have been issued with them sometime in 1978 or 1979!