What are my options for [Speedtimer] bracelets?

I own a couple of old restored Speedtimers that run well, but I don’t wear any of them often because the bracelets aren’t particularly pleasant to wear.

Does anyone have any recommendations for nice bracelets I could pick up for them? Not replicas of the originals, but other designs that would fit the vintage watch esthetic. Also, I can’t remember if they’re 19 or 20mm bracelets, so if someone who knows these watches could remind me, I’d appreciate it. Thank you.