There are a ton of variations with the coronet, even within the same reference! You have, tall and spikey, short and fat, large opening, small opening, flat opening... A good example is with the DRSD 1665- There are 5 different dial types for this one ref, and each one varies as the dials were made by different sources (e.g. Beyler, Singer, etc).
If you can narrow it down to a specific watch's reference, I can check and see what pics I have. You can either post as a reply here, or hit me up on PM if that works better for you...