The infamous Beta 21 quartz movement doesn’t always get the credit it deserves, but it is important to note that the quartz movement was real and that all of the major Swiss manufactures, including Patek Philippe, grouped together to make a sustainable quartz movement. Thus, the Beta 21 was born. This 3597 is a great example of that period, coming in the rarest convertible version offering you the choice to wear it on a band or a bracelet. The oversized cushion case and bright blue dial of this watch are the epitome of 1970s glamour and opulence, with no expense spared in developing the most advanced watch of the time, a sexy cyborg if you will.

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