Yeah, prob worth more to you than others. It sure does look good for its age, might be early 70 too. They were not very much back then either, Of the cheapest brand bike.
And, could be wrong yet, your crank arms appear to show one of he worst features these japan bikes had. The pin holding the pedal arms were crap soft metal. They would become loose easy; nut and or bolts strip, bolt end break off too. , resulting in mal-alignment of arms. It would continue to get worse until, wouldn't hold. I smacked a few around, back in the day, and remember em. trashed em too, I mean, you could not even sell or salvage parts from these things. .
In your photo, they appear to be misaligned. I wouldn't be riding it unless they're correct. Maybe replace the crap soft pins with harder.