Yesterday’s watch has a more extrovert sibling, who insisted on appearing today 🙂 This version of the 67-9577 has a rich blue dial with contrasting orange lumed hands – something of a classic colour combination. This one also features a white tachymeter ring and silver sub-dial with cyan highlights. My example is from July 1973. There is one more dial variant of this model to be found, with black dial, white tachymeter and silver sub-dial.

Here’s the other dial – from a 1974 German catalogue:

More on the 67-9577 here:
https://sweep-hand.org/2011/11/28/this-weeks-featured-watch-17-67-9577-chronograph/