Riki Watanabe Flip Clocks Collection These are flip clocks made by Copal from the 60s-70s. This is a series designed by Q Designers, led by Riki Watanabe. Some of the collection is housed at Metrox. From left: Caslon 601 Caslon 101 Model C-61 Caslon 401 Especially the C-61, which adopted a quartz oscillator, rare at the time in the 70s, combined with its space-age design, evoked the near future. The retail price of the C-61 was 25,000 yen. Due to its high value, around 100,000 yen today, it is estimated that only a few were available on the market. All clocks have been overhauled once. The electric clocks are 60HZ specifications, except for some. We have displayed them without powering them on. The condition of the clocks is subjectively excellent, but only the battery-powered C61 has a partially broken fixing claw on one side of the lid. Please examine the images carefully for the condition. A rare set of four, how about taking this opportunity?