Horological Meandering

Does anyone have a good recommendation/source how I can go about finding the correct crown for this guy? Thanks in advance🙏 ...  

Now, to find ir... Ebay, or ... Well, I will see if I find something from my side. ...  

And thanks for sharing that amazing piece.

The smallest watch in my collection but looks amazing when wearing sleeves. I haven’t seen a a Chrono seconds hand like mine anywhere else and love it, wondering what’s the story with it. 🤔