Gordon, Yes, that is the case except for a rarity of people who have some forms of connective tissue disease. These people have "bullet proof" skin and don't develop any of the signs of hard work. And any damage repairs in short order, often with no scarring or minimal scarring. Some people with connective tissue disease also have the opposite, keloid scarring. I know because I have connective tissue disease, soft skin, no scars and all. In any case shoe making was probably only an incidental job for Charles and any skin damage had probably healed up.A shoemaker's hands are rough, it is quite hard manual work and it marks the hands and fingers quite noticeably. Whilst SMs fingerprints, especially the thumb and index finger show some signs of wear, the rest of the prints are relatively smooth and clean. It is a pity that they didn't take palm prints.