I have posted pics below of a vintage lizard bag that I bought on eBay. The seller said it was "stamped I approximately 30 years old." So that means it should be an I in a circle, right? For 1979. Any one see a circle? What do you see and how old do you think it is? Both ends of straps are shown. I REALLY NEED YOUR HELP, AS SELLER IS STONEWALLING.