Here's my 18k Eterna Kontiki 20 from the 1960s with a casual basket-weave strap (after all, back in the day, its 37mm diameter and screw-down crown puts this squarely in the sports watch category).
I love that Kon-Tiki Super. A Kon-Tiki is definitely on my short list of Swiss watches I want to own.
I'm on Ebay now looking at Eterna's again. I was thinking about getting a better example of a Connie as my next watch but now, now I'm not sure.
My Centenaire '61, this pic is before the complete restoration (moisture inside the movement cuz of cracked crystal. Can't wait to get it back.