The whistle is the Bocote, second from the right on Paul’s site. Plays like a dream. The wood has darkened a little from the picture, but the grain is still gorgeous. Unfortunately I’ve developed an alergic reaction to the wood 
. I’d not heard of anyone else with this reaction to Bocote. I’m also suspecting an alergy to blackwood ( a Copley flute I recently bought!). Looking for a good home, $180 plus shipping and insurance. Reply off board if interested.
Keith
Sorry you have had an allergy problem. It MIGHT be possible to eliminate this by coating the very thin bit of wood actually in contact with
your lips with polyurethane or some such. I’ve been trying to think of some good way to avert this in people with known wood allergies-- perhaps shaping the mouthpiece, then disassembling it, cutting that bit of wood back about a 1/16th, re-assembling and filling the resulting gap with epoxy which should be pretty inert. I could probably retrofit this modification to your whistle if you haven’t sold it yet. Any other suggestions would be most welcome. I want my whistles to make people happy, not sick 
What about using japan(available from lacquer tree) which had been used on the ancient wood instrument in Japan? I am sure that the cost will jump up though…
Nothing else comes into my mind for now.
There was a discussion on Woodenflute recently about cocus allergies. Then, “super glue” was proposed as a good coating material. It’s transparent and inert, can be aplied in a thin coat, and can be removed with acetone if necessary.
g
Clear spray acrylic lacquer can be removed with lacquer thinner (and probably nail polish remover).
Clear shellac, also available in spray cans, can be removed with alcohol.
Clear fingernail polish (which is also an acrylic lacquer based finish) can be removed with nail polish remover (and probably lacquer thinner).
All of these are good possibilities.
My first choice would be clear nail polish.
Nail polish remover is acetone based and far less toxic than lacquer thinner, which is xylene/toluene based.
Best wishes,
Jerry
P.S. Although it’s been used successfully, I would be inclined to avoid superglue for this, simply because it wasn’t developed with its main purpose to be a finish, and I don’t know enough about how it can be removed later, if desired. The other products I mentioned would be easier to work with than superglue for finishing purposes.