Want to share yours? Here is one I just got from Scott Alison on eBay, a NOS Kriesler in 18 Long, on my rose-gold Lemania. 16mm rose-gold buckle I swapped onto it. Wish there was more variety available, I'll have to haunt the watch vendor sites. Hope you like it as much as I do.
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.
Have you looked at Fluco? Holben has them and they aren't quite so glossy. https://holbensfinewatchbands.com/collections/leather/width_18mm+brand_fluco+style_shell-cordovan
You also might want to check out Ashland Leather. Their use beautiful Horween Shell Cordovan. https://ashlandleather.com/collections/leather-acessories/products/color-8-cordovan-watch-strap
Hi have a couple of Myron’s straps (Rover haven) great stuff and great guy. I do however have an affection for the styling of the Vintage straps like the OP’s with they curved exposed stitch on top or The box stitching that was commonly seen on pig or calf from but 30’s-50’s- not easy to find that style new anymore.