The metal numbers would (IMO) have looked really nice against the stone tiles. The wood panel ruins the effect.
I hope you have saved some of those stone tiles because, when you remove the wood panel, there will be some nasty looking holes which will be hard to disguise. It would be better to replace the damaged stone tiles before installing the metal numbers (again, IMO).
On the plus side, looks like the guy who installed the wood panel owned a spirit level.