Anybody seen a Tudor like this?

[Karahana]

http://www.ebay.com/itm/VINTAGE-ROLE...item58b2507cfb

I'd be interested in buying something like this as a gift. Polished and serviced of course. Since I'm not familiar with Tudor's and never seen a square one I´m asking for your help.
The lettering does seem similar to other vintage Tudor's I've seen before but I simply don't know. I just found it interesting.

Thanks!