Today’s piece might be mistaken for something of a novelty watch, the Challenge Golf. But it is far from that – it’s a serious bit of kit, with an automatic high-beat movement (28,800bph) with fine adjuster, hacking, hand winding – and a special, indeed unique feature – a golf score counter. The 7760 derivative of the 7700 movement is also unique to this watch, with the crown positioned at the 8 o’clock position. It is date only, set by winding back and forth at the 12 0’clock position, whilst pressing the crown moves the score counter found at the 12 o’clock position. Two case design were used, both black coated with either steel or gold plated bezels – a ‘TV’ style one and a round one, which is what I have here, from October 1973:

The other case design is shown here. with more information:
https://sweep-hand.org/2011/06/07/this-weeks-featyured-watch-6-the-challenge-golf/

Here’s a marketing image from 1972, showing the two bezels – on their white straps which are very rarely found these days:

SONY DSC

Finally, here’s how to use the score counter:
Citizen Challenge Golf Manual