Thanks for the answers.
theczechone - Yes, they are the Kobe Seiko wheels from the 432Z. All portuguese Z had them, but some owners decided to change, luckily the previous owner didn't do that. Some minor rust...let's see if we don't have any surprises!
Andreas - Thanks. The wheels are extremely rare and I'll keep them...I'm thinking buying the watanabe 8 spoke for dailydrive and this ones only for meetings and so on.