Claudio, thanks for your post and great that your forend was reusable. I don't want to take away from your theme, but I went through the same process a few decades ago. The case was done by a friend who did the best work and the restock was done in England for this Holland Royal two barrel set. That was when stocking was more affordable.
[Linked Image from i.imgur.com]

http://www.bakercollectors.com/