Anyone know what grade the ETA 2892-A2 is in the Omega Cal 3220?

 

Top. The 3220 is not chronometer grade.

Cheers, Al

 

Thanks! Glad to hear it's not Elabore as I had thought.

 

Easy to tell - just look at the balance wheel - if it's glucydur then it's Top at least. Off the top of my head, I can't think of any modern ETA based Omega movement that uses the nickel gilt balance wheel, so I think they are all Top or COSC.