I hardly wear this one. I am not one for gold. But she is unique and vey shiny! Still after a crown and a crystal / plexi for her ...
I was asked for a pic of crown on my 10357-1 so here it is. It is the right size and goes quite well with the watch but I believe it is a much later service replacement. Comments welcome ...
This is the crown on my 10357-1 which I believe is the correct one. It measures 4.5mm in diameter. The later style of "U" on yours would lead me to also believe that it is probably a replacement one.