The crown with space between the coronet & dots is the current Triplock (703 & 704, which look similar from the outside). The version without the space is the previous version (702). Rolex installs the 703/704 currently on most sport models during servicing, however, vintage sport models since approximately the 80s would have come with a 702 (earlier sports models would have been fit with a 700, which is actually a Twinlock & lacks the dots altogether).
This is a very complicated subject (with many exceptions to the rules) that could fill a book (if Rolex were willing to provide guidance, which they will never do).