These photos are Jack Justis.You may need to name the maker to get ideas who can verify it
for example if you have a balabushka its tascarella who people respect most for verification
ThanksIf it's one of Jack's cases it's made using Wicket and Craig veg tanned leather. I don't believe Jack would ever use anything other than leather, he was very proud of his work and wouldn't have done anything to jeopardise his reputation.