those centercaps are off of an S600...

and honda did not switch to the 4x100 lug pattern until the eighties...

And there is no way honda made a wheel that looked that good back in the day...

Here's a comprehensive list of most of Hondas OEM wheels.
http://www.honda-tech.com/zerothread?id=1071731

I know for a fact there are several sets that are missing off the top of my head... like the optional S7s from 01, and several others. But compare the design of the older honda wheels to the ones you have. The engineering isn't even close.

I think they're Watanabe wheels, if you ask me....
-jonathan