Kawasaki GT550/750 Clocks set, I bought these as spares and no longer need them - I have never used them so have no idea of the functionality. They are sound and all in one piece - the inner plastic case looks to have been properly plastic welded in the past and is solid.
Seems like a decent looking set of clocks with the usual scuffs and scrapes for 40 years old equipment, but decent looking as can be seen in the pictures.