435, of course. Or maybe 434 if you're a gentle player.
I had a customer who experimented with coke. I mean, cleaning his harps by soaking in Cola. I think it was much the same result as tuning to 432/5. Maybe it was flat Cola. He certainly presented some very flat harps for me to work on. I really should've charged extra for that job.
I have had a couple of customers have me tune sets of harmonicas to A-432 Hz. The logic behind it is that some consider A-432 Hz the "Healing Freqency". In theory, Mother Earth vibrates or resonates to 432 so tuning musical instruments this way makes the music more soothing.
I think that about half of the customers who I've done this work for are true beleivers, and the other half are just trying to be in tune with their bandmates who tune to 432. ---------- Tom Halchak Blue Moon Harmonicas