Back to a watch with a date function today, and it’s a Crystal Date from March 1967. The Crystal Date is the date only version of the Crystal Seven, getting its name from Citizen’s use for the first time in 1965 of hardened mineral glass. As with the 540, Compact and the export auto-dater models featured previously, this one uses the 5401 movement. Although this is the base Crystal Date model with 17 jewels, it features a very nice pair of slender lumed main hands and small lume dots on the outside of the hour markers. The dial is finely printed with an applied ‘A’ logo, and the fluted bezel is typical of the mid 1960s. It’s running well and keeping good time:

More details here: https://sweep-hand.org/2012/05/10/this-weeks-featured-watch-32-the-crystal-date-17j/