Posted 10 years ago
When I first started collecting wings (years ago), I was told by some "seasoned" collectors that clutch back wings were all post WW2. While many are post war issue, the clutch back in itself is not a sole determining factor for age.
This particular wing has era "Sterling" markings and is consistent with war era versions of the wing. Additionally, this particular example retains one of its original "securing devices" with the patent information on the back.
US Patents 2308412 and 2308424 were both issued on 12 JAN 1943. These securing devices were used to hold ribbons, ribbon bars as well as wings and other badges.
While I have learned a heck of a lot from other collectors-- remember some of it may be based on misinformation, old or incomplete data or just best guesses of the times. It always pays to have an open outlook and read/ investigate on your own.