The Chronoscope Isn't a Moonwatch but it’s every single bit a Speedmaster — and just as great, Otherwise much better. That asymmetrical style, with the extra case content on the appropriate aspect performing as crown guards, has remained a signature from the Speedmaster considering that 1964. All Moonwatches, from 1969 https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/