Marvin Huey and his wife, Julia, in Lawrence, Kansas re-did a Purdey case for me that was much worse than yours appears. There was even leather missing on the corners. He added new straps and covered the ends with a bolster of leather in addition to rehabilitating the interior. He "aged" the additionsto the exterior so it looks almost proper period. The old rail labels and bruises and scars continue into the new portions. It wasn't cheap but I couldn't believe the result he was able to achieve.