Antique rusty lighter - Restoration project

Today I’ll be restoring this rusty antique lighter. It has been damaged badly by the rust and is in urgent need of restoration. The whole top side had rusted and the stone didn’t even move when I begun. Luckily the lighter is made of thick plate and the rust had not gone trough. The cap didn’t have much extra material left though. After removing the rust I found stamp saying FZ 522 and the bottom of the lighter says 522 too. I tested a “real“ rust remover this time. It’s much less smelly than vinegar and works well. I think all the methods have their pros and cons but I’ll definitely be using this in the future too. After the rust was removed and the jammed stone was released I put the parts in lathe just because I have access to one and the pits were very deep. This I sanded the part up to 2000 grits and then used a dremel with wool polishing bit and polishing compound for mirror finish. As you can see in the end it ended up looking stunning. I might make an update on this after I toy with nickel plating s