just take a look on that pair... overal design of jeans matches to timmen cut, details (front fly seam), wash, backpockets with rivets (timmen or lemmen cut was usually designed with "loud" backpockets - rivets, leather ornaments, etc.), back leather patch also matches to diesel standard (older style, 5 years ago cca), stitching, back yoke, front "doubled pocket design..... blah blah blah
Easy ;)