Explorer II questions. anyone?

[Ricky Rolex]

Hi guys. I'm thinking of getting an Explorer 2 white dial as I'm currently wearing a DJ but fancy something more sporty for the summer. I've had Subs etc in the past with closed lugs & crown etching at 6 o clock & would like something similar. What I'd like to know is.

What year did Explorer 2 start producing closed lugs?

Do they have inner rehaut engraving?

Same for crown etching.

Would love the new orange hand but bit out of my price range.

Seen a few nice ones online but most have exposed lugs & older style clasp. Something I'm trying to avoid on both counts.

Thanks in advance.