Can someone help identify these 18mm bands and which models they may be associated with?

I saw one in gold in the 1977 Spanish catalog.

Thanks Butch!

The two most popular designs of the now-defunct Swiss bracelet company, NSA Novavit. They produced for such notables of the watch world as Rado, Certina, Heuer, Zenith. It's worth searching for them under these names as you need extra links. The bracelets were often used in the 1970s, mainly for models from the SST, Senator and Spacetronic lines.

Quote from: bumo79 on January 29, 2025, 12:45:34 PMThe two most popular designs of the now-defunct Swiss bracelet company, NSA Novavit. They produced for such notables of the watch world as Rado, Certina, Heuer, Zenith. It's worth searching for them under these names as you need extra links. The bracelets were often used in the 1970s, mainly for models from the SST, Senator and Spacetronic lines.

Thanks bumo79!  I thought I recalled seeing one of these on an SST Mystery dial, but I haven't been able to find it.