When did AP start putting Ceramic Crowns in the Offshore Diver?

[AndrRibeiroChaves]

Hello Guys!

I have been considering purchasing a pre-owned the Offshore Diver and I have been torn between the Black Dial 15710 and the Gray Dial 15720.

I like the Black Dial of the 15710 better, but love the upgraded movement and quick strap change system on the 15720.

There is however, a question I don't think I can find a definitive answer for and it is about the Crowns' material. Does the 15710 features Ceramic Crowns or this upgrade only appeared in the 15720? I do think the 15707 already had them, but I am not sure as pictures seem to suggest either way.

Thank you for any input regarding this matter.