Sticking with a hand winder for today, and this time it’s the Date Flake. Not to be confused with the Diamond Flake and the Diamond Flake Date of course! 🙂  Citizen used ‘Flake’ for their early to mid-1960s thinnest calibre models, most notably seen on the Diamond Flake which was the world’s thinnest when it was launched in 1962 (see here: https://sweep-hand.org/2013/05/15/this-weeks-featured-watch-51-the-diamond-flake/)

All these models used the same calibre – the 0700 – but with differing jewel counts. 25 and 31 are found in the Diamond Flake, 25 in the Flake Date, the latter being designated 2700.  These have gold plated movements, whilst the Date Flake, movement number 2710, has 22 jewels and no plating on the movement. My example is from June 1968:

More info is available here: https://sweep-hand.org/2015/06/17/this-weeks-featured-watch-70-the-date-flake/