All The new Speedmaster Chronoscope variants in stainless-steel is often matched to both a metal bracelet or even a leather strap. That asymmetrical style, with the extra circumstance substance on the correct side acting as crown guards, has remained a signature from the Speedmaster since 1964. All Moonwatches, from 1969 https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/