Hi all

I have a rather technical question.

Is third wheel for cal. 550 (550-1240) interchangeable with third wheel for cal. 600 (600-1240)?
Some parts from cal. 600 are same or equal with cal. 550 but this one is not (by Omega at least).

Has any of you some practical experience if those two parts are same or different?

Thank you in advance

 

If they have different parts numbers (and as you noted they do) then they are not the same parts...