Unless the buyer knows what to do to correct this, they will not get a nice tune out of this whistle
D Key Soprano Whistle Flute 6 Hole Clarinet Flute Tin Penny Nickel Plated Brass | eBay 
It seems to me that the seller is not exactly knowledgeable about what they are selling!!! 
Thatās a new musical mode: Ambidextrous Lydian Pretzeltone. It uses Ambiguous Tuning. No more limitations from old standards of Equal Temperament, Richter, Just or Compromise tunings, itās remains aloof on every note. One pipe, one mouthpiece, two modes. Double the tone for your money.
All the pictures everywhere on ebay and any other platform of those Chinese FeadĆ³g-knock-offs look like that.
What a raw deal. One can buy a genuine FeadĆ³g for that price!
I think youāre supposed to play it by inhaling on the bell end.
Yeah, they look very much like the Feadog Generation knock-offs 
Just think, they make our antibiotics . . .
It probably still plays a D, all fingers down.
ā¦ and heās hoping to sell 5 of them 
. Someone some years ago did bring a whistle set up exactly like that to a workshop I was doing - I did notice the fault.
I have seen a couple of flutes similarly arranged for sale on eBay as well, Iām sure one was pointed out here a few years back.
I received a nice handmade alto F whistle years ago. It came in two pieces to better fit in the shipping box. I was so excited to put it together I put the tube on backwards. It is actually an interesting scale that comes out. Iām not sure of the modeā¦ 
I hear itās especially well-suited for gijs, epipnrohs and leers.
But then you canāt swear in court that you didnāt inhaleā¦
Oh, BTDT. Bought a secondhand whistleā¦ couldnāt figure out why it was so badly out of tune as it was from a respected maker. Even posted here about it. Posted a recording, everyone agreed the tuning was off. Posted a picture. Someone said āUm, looks like the tube is on upside-down.ā headdesk Guess I didnāt look closely enough to notice.
It gets worse. I couldnāt get the tube back off; it was stuck fast. No matter what I tried. I had to actually send it back to the maker to separate the two, lol. (Iām sure he head-desked as well. He kindly didnāt tell me about it, though.)
(I honestly donāt remember if it came to me that way or if at some point I separated the head and tube and put it back on the wrong way. Probably the latter. In my defense, this particular whistle has a little āDā inscribed on it for the key, at the bottom of the tube. I was used to whistles that had a label or makerās marking at the top of the tube, so probably popped it back on that way without even thinking about itā¦ and of course āDā is the same right-side-up or upside-down, soā¦ but itās also how someone noticed I had it on wrong-way-round-- āUm, I think these usually have the āDā at the bottom?ā Then everyone noticed that yeah, the fingerhole arrangement looks funkyā¦)
It was, um, not really my finest moment in whistling. Not that Iāve had many fine moments, butā¦ still.
Iād say $14.91 isnāt a bad price-after all,the initial description says itās gold plated!
At Yosemite National Park they have a reconstructed Miwok village, nearby is a little shop with Miwok-related books and so forth.
There were some Miwok flutes for sale. I picked one up and played it. A guy quickly came over and said āyouāre the only white guy who has been able to get a sound out of those!ā
He was a Miwok flute player, and the maker of those flutes.
What it is, traditional Native American flutes donāt have fipples, theyāre open-ended and played like the Bulgarian kaval or Turkish ney.
The amazing thing was when the player/maker played a tune on one of his flutes, then flipped it and played another tune.
āYou can play them either wayā he explained.
@Richard
Do they have a notch like a Quena? I once tried to play a rim-blown flute without any notch whatsoever. Kind of difficult, took me about 15 minutes to get a tone at all. I can play quena and quenacho but those all have notches, which makes them much easier to play.
But flipping the flute around makes me think, they donāt even have a notch, right?
These downside up whistle are common on the internet. They even make them in your choice of colors.
https://www.aliexpress.com/item/32820564335.html
I am pretty sure they were discussed herein prior to this thread, too. But having had a look at those in the linkā¦at least the head appears to be removable! And the blue and red ones look anodized. Thatās probably a trick of the lighting, but an anodized whistle would appeal to me. When it comes to those cheap Chinese whistles, Iād spend a few bucks more and get an entry-level Dixon, or save a few bucks and get a genuine FeadĆ³g, Ckarke, Waltonās, Generationā¦you get the idea.
Right, no notch, theyāre like a Bulgarian/Macedonian kaval or Turkish ney.
It seems obvious that the Native American fipple flutes are post-contact though I really donāt know.
If you see North American Native flutes in museums youāll notice that they generally donāt have the fipple mechanism but are open on both ends and notch-less. Likewise I think all the ancient South American Native flutes that are found in archaeological sites, museums etc lack fipples but I think they have notches. Iām sure thereās a Doctoral thesis collecting dust somewhere about this stuff.
In any case itās cool to see the original style being maintained by the Miwok.
About playing end-blown notch-less flutes, itās just a skill like anything else. Once you get the knack itās a handy skill to have, because you can take the headjoint off a flute (wood or Boehm) and play it, or play a Low Whistle from the other end, and play any random piece of plumbing pipe. Well I guess not āhandyā but at least cool in a way.