Is that a vintage Generation or there were other similar looking whistles of other brands at that time?
At that price is might be of interest to someone anyway…
It’s a Clarke type, unpainted.
It doesn’t appear to be a painting.
There were similar whistles. Also, a tinker with a mandrel (conical metal form about which tin could be wrapped) could make a no-name whistle. I believe that’s how Clarke started, although I don’t know how common that was.