Are the links hollow on ALL no date subs?

[dooder202]

I was in my AD this Friday, and I was presented a no date sub (Not sure if it was the 14060 or the 14060M). I looked it at for about 45 seconds and actually really liked it. I did notice though that the bracelet had hollow links that were easily viewable and distinguishable in weight and feel. FYI, I had no idea what serial number it was.

So my question is, do ALL the no date subs come with hollow links? Or just the older ones? Or maybe just the 14060 and no the 14060m?

Any comments or input would greatly be appreciated!