Details on 116613LB submariner needed.

[Madhav]

Hello,

I was wondering when the new blue sunburst dial submariner with two tone bracelet became available?

And whether rolex changed movement between the new blue and flat blue (old one) models and if not what other changes were made to the new model if any?

I have searched the web for this information and I haven't been able to ascertain all the changes.

My local AD doesn't appear to know about the new model and wants to sell me the older flat blue model.

Thanks

Madhav