Clare Two Piece Whistles
I have had one for a couple of decades and find it very useful to carry around because it fits neatly into a shirt or jacket pocket, handbag, etc. I improved it by sticking a nice Generation head on it - can’t remember much about the original head except that it was serviceable.
I had one a while back and it was one of my best cheap whistles.
I think as with all inexpensive whistles; you might get a good one, you might get a bad one.
Yes, the one I had (may still have) was surprisingly nice - sweet upper octave.
I have one and think it’s good.
And very handy so never have to go "unarmed".
I have a Clare two-piece. It started as a decent whistle, but I swapped out the head with a Hoover whitecap, and now it’s really good.