Leather isn’t perfect and that’s the beauty of it. All leather or “genuine” leather has natural markings, including variations of shade and tone, as well as nicks, scratches, and wrinkles—characteristics that distinguish it from manmade materials.
Expect that some marks will appear on the surface of your leather. Their origin might be anything from healed scars and barbed wire scratches, to skin “stretch marks” and insect bites. By no means should they be considered a defect; nor will they affect the durability or construction of your piece. Such “imperfections” are your assurance that you have a true leather hide.
Also, keep in mind, grain patterns and coloring of leather will vary from hide to hide and also within the same hide, making leather all the more interesting and unique.