Can't recommend any watch as I think we have totally opposite tastes.
However I have been really "into" the omega moonwatch recently. I love the look of it with a leather strap. I'm not spending $6-7k on a watch I would not wear much anyways. So I found a moonwatch "homage" aka a knockoff, unfortunately it only comes with the stainless steel band. So I bought a leather band and I got this kit below:
https://www.amazon.com/gp/product/B0...0?ie=UTF8&th=1
I'm hoping to also try using that kit to change out the batteries on my old watches that have been sitting around for years. Anyways might be something worth getting if he wants to fix up his old watches.