Rolex Crown and Case Tube Part Number Guide
Part numbers for crowns start with 24- followed by three numbers and a -0 or -8 indicating whether it is a silver tone or gold tone crown. Examples: 24-530-0 (Silver tone) and 24-530-8 (Gold tone)
Part numbers for case tubes start with 24- followed by four numbers and the occasional -0 or -8. Examples: 24-6000 and 24-5030
