Warning, this subject is old (5021 days without answer)
an_unusual_eye
in the U.S. at least - this would have been originally found ONLY on a 1981 280zx Turbo... 1982-83 Turbo received a different style. These were available in silver, and with gold accents also.
ingo
Our Datsun/Nissan-specialist an_unusual_eye is celebrating his Birthday today, but later on he surely will be able to help.
Dieselbert
Dimension 6x15 manufactured by Nissan
Maybe from an early Fairlady? Whow knows more...
Thanks!