Rolex

could you help me identifying the version of the bezel. sometimes i'm lost in rolex jungle ;-) is it a mk IV or "service bezel" (mk V ?) i obviously read the comprehensive reviews (from amanico & DrStrong) but not able to make up my mind... let see if you...  

Credit picture: I cannot remember, alas. ...  

Definitely not 1 or 2. The font on yours matches 4 and futurama bezel. The length of the line markers on the bezel also look closer to the 4, to me. Fun game. 😊