Well, to start with, I am not even sure of the number of variations existing for the N&G we have: First type: convex lenses to deflect debris and conventional arms Second type: retained the rigid, one-piece plastic frame with the addition of an elastic strap. Third type: the frame moulded in 3 sections with a hinged bridge. Type 3 exist in clear or dark version Type 3 and possibly type 2 had a metal storage container (with proper nomenclatura written on it) Cloth bags,removable cases and cardboard cases seems to have existed Type 4: are goggles for night flyers Coud someone post pics, please?