It looks like it's Pre-war and the Lot number might be K4474T. If you Google that, or go to the Winchester, or Ammo,. Forums you can usually get a knowledgeable reply. Ed.
This box has been assembled from at least 4 incomplete boxes. This will make the lot number meaningless and pinning down the date of mfr. difficult if not impossible. best you could hope for would be to find the approximate decade. The K4744T is not the lot no., but the Item designation no. from the contemporary Winchester catalog.