Very nice, I just bought a similar vintage one myself, on it's way to me now. You don't see the 18mm often, looks great on the Lemania.
I've been trying to find some more modern versions that aren't as glossy, but they aren't common/high price point.
I will say though, I'm a fan of horse hide. The leather lasts FOREVER and will take abuse other leather can't handle. I have a vintage motorcycle jacket and a wallet in the same stuff and the patina on them is perfect.