Have no recollection of them in the 50 but plenty carried through to the 60s.
The saving stamps was one I can remember well from the UK (green shield stamps I think). Dad used to be with armoured recovery in the army, I can remember him coming home with books of stamps, you used to get quite a few filling up a centurion tank and an Antar carrier :D.
https://www.aulro.com/afvb/images/im...015/01/698.jpg
Martyn

