This replacement LH switch, F 031, arrived from Yamiya.
I sent them a pic of the rough flat-black finish on the underside, this is the answer I got.
...."Thank you for your inquiry.
1. The OEM item of HONDA is such finish altogether about two years before.
Therefore, our website has also carried such a photograph.
We checked to HONDA before.
I think that the factory was changed into China from Japan.
Even if you send it, we stock only the thing of such finish."
Is the LH switch i received a good repro of the original? That seems to be what Yamiya are suggesting or perhaps I'm misunderstanding their reply. My old switch is faded at bottom but not rough. Rob, #6806