In this Vic World article linked below, it is stated that he nickel plates the wheel spokes. I can't believe he would deviate from original spec. Or was it just a misprint? What was the factory finish? I have a really nice condition '69 CL350 front wheel with original finish and the spoke finish looks more like nickel than BZP.
http://www.worldmotorcycles.com/Pages/MC-Retro-Article.htmlAs Kettle738 point out, we reckon all Honda Spokes are BZP though and ageing and polishing on old wheels can make them all look slightly different.
Cheers .. AshD (UK)