Any '50 to '70 vintage scope would fit, but I like better the steel body ones.
Tradewinds proposed a lightweight aluminium tube scope called TW Zoom 1 1/2 - 4 X wich had a 1 inch tube for their Lightweight rifles (i.e. 4000/4100 and Husky). Not that there are many, they're very hard to find (mostly sold in the USA) but it gives a rough idea of what they proposed for the purpose in that time period.
You can also go with a Hensoldt Diavari D, a Leupold D8 or Vari-X II, a Weaver Redfield Master Variable, Lyman All American, Bausch & Lomb Balfor A or Balvar 5 or alike.
Tradewinds proposed a lightweight aluminium tube scope called TW Zoom 1 1/2 - 4 X wich had a 1 inch tube for their Lightweight rifles (i.e. 4000/4100 and Husky). Not that there are many, they're very hard to find (mostly sold in the USA) but it gives a rough idea of what they proposed for the purpose in that time period.
You can also go with a Hensoldt Diavari D, a Leupold D8 or Vari-X II, a Weaver Redfield Master Variable, Lyman All American, Bausch & Lomb Balfor A or Balvar 5 or alike.