I’ve been wanting to get one for a long time and stupidly never put my name on the waiting list. Does anyone want to sell me one? Please…
P3
Hobgoblin UK has a used one listed, dunno if it’s tunable. Check near the bottom of the flute listings:
http://www.hobgoblin.com/local/secondha.htm#flutes,%20fifes%20&%20piccolos
I have a tunable Chieftain low D that I would consider selling if your interested. It’s a great whistle.
Last summer Song of the Sea had them in stock. I called and order one and had it in a few days. Great whistle and fine store
Sometimes the Whistle Shop has them, too.
Well, my wife bought me a Burke Viper Low D for Christmas so the search for an Overton will be postponed for a while! 
SWEET! 