Pair of DUREX Gauge 11 (3mm) 10" Knitting Needles

Original Unused Durex Knitting Needles.
Yes, it appears Durex did make knitting needles.
Made of casein, a plastic made of milk protein which predates modern plastics.
I've been told these are very warm and comfortable to knit with.
Probably from the 1950s.
They are gauge 10 which is 3mm wide and 10" long