You all know the ruby, emerald and leather mars. And you saw the ice lenses on ebay... I were searching for a emerald one, but now I owned this beauty (yeah, you can call me * censored*):

There are retaining clips but you're right, there is more space then on most other mars.
The seller I got this mars from said it is new, from a optician sell-out.

On the Mars box is written: "O RX Technology"? A RX Mars?

(yeah, you can call me FP2):

You'd need more than just a customized Mars to become FP2. Nice catch, though!

It's very well possible to be an RX Mars. Should have prescription lenses, however.

Why does he assumes I have bad eyesight?

So, you're the one who won that auction on ebay-germany. I was checking it out but got tied to a meeting and at the same time my PDA's battery went low that I didn't got a chance to enter my bid.

Great to see it went to a member.

What is the exact color of the lens plain persimmon?

i think it's plain. here are the pics from that auction:

I'm not sure how the lenses are exactly called, they seem more orange than persimmon. I wonder that the id of usual mars is 04-103 - 04-108 but this mars has 06-173. How come?

I don't have that SKU in my database, so it could be new. Hmmm

I think the 06-173 number represents Rx, which is why we don't currently see it in the database. If we search the DB, the 06 code represents either Rx or M Frames. In this case, since the box says Rx tech on it, it's safe to assume this one's indeed been zero script Rxed.

Nice pick up, BTW. Hope you enjoy it. :)