Keep in mind that I don't own a vintage handwheel and am not trying to assemble a real-parts Obi, but I would personally never consider rechroming a handwheel that has the majority of the chrome left. Of the ones there, I'd only even entertain the idea of rechroming the one on the left, which is missing substantial portions. There are no rules, but this feels like refinishing vintage furniture that looks worn, but really only needs a clean and minor repairs to stabilize it.
If you want a perfect handwheel, I'd get a replica and display the vintage ones next to the saber. But the character of the vintage ones is better anyways.
If you want a perfect handwheel, I'd get a replica and display the vintage ones next to the saber. But the character of the vintage ones is better anyways.