The IP address is listed as static (which means tellas.gr would have no problem identifying your guy) and is on several spam block lists.
http://whatismyipaddress.com/blacklist-checkYour target is very interested in watches. He is a regular poster as ktirio2010 at rwgforum.net, he was there yesterday.
http://www.rwgforum.net/user/41247-ktirio2010/Ktirio is a relatively new Greek magazine that foucses on architecture and technology design. Somebody that has a watch fetish in Greece would probably read it.
http://www.ktirio.gr/default_en.aspx?catid=292 ktirio2010 as a member of rwgforum.net posts a lot of photos of watches that are stored on photobucket. The photobucket member that uploads the watch photos is Marlin M (marlizamarliza).
http://s39.photobucket.com/user/marlizamarliza/profile/Surprisingly to me, there are a lot of people named Marliza Marliza but they are Brazilian or Indonesian. However, Marlin is a common Greek first name. So maybe your guy is named Marlin Marliza?
If I were you, I would scan these posts to find the model number for one of the watches that he really likes, then send him a message saying you've got one for sale at a price that is so low it's implied that it's stolen and you're trying to fence it. Maybe he'll be interested in buying it and send you a shipping address.
That's what I would try.
Let me tell you a story.
Just after my new house was finished three years ago, somebody broke into it just after I moved in. At that time there was lots of building activity from Hispanic work crews up and down the street, and one had finished my house only weeks before. I am on the perimeter of a big subdivision and my backyard faces beautiful woods I love to walk in that are in the flood plain and so will never be bulldozed for more houses. I have a wonderful sense of isolation and open space and privacy in my back yard unlike the hundreds of others I live among who see an ocean of head-high fenced in dog poop plots as their back yard view. I have plenty of glass on the back side of my house to enjoy my view, and at that time no alarm. So I go off for literally 30 minutes around sunset and come back to a decorative bowling ball ("yard art") thrown thu the plate glass sliding door to my bedroom. My TV is gone and some money is gone and my cellphone - a brand new Droid X - is gone.
After the police leave later that evening I go online at Verizon to move the phone number to a dinky replacement phone. And I see that my bad guy has used my phone to call somebody in the Atlanta area. And I check the area code and exchange against census data and sure enough, it's a Hispanic neighborhood. Some neighborhood work crew building houses, probably my own work crew, has shafted me. And I'll never find out who. So I change the number to the new phone, effectively deactivating my lost stolen Droid out there somewhere, and go to bed with the wind whipping the plastic tarp around over my broken door all night long only three feet away. Between the noise and kicking myself for not installing a GPS recovery app, I don't get a wink of sleep.
The next morning the replacement phone starts ringing from the Atlanta number. Over and over and over every half hour. Whoever is on the other end thinks he's going to get the bad guy on the line speaking Spanish. I know if he hears me answer in English, he'll never call back again. So I think about what to do.
Eventually I take the phone to my neighborhood Mex restaurant where I have been a loyal customer for 20 years and have a friendly acquaintance with the entire staff. I ask them to call the number, speak in Spanish, and say they found this lovely new Droid X accidentally left behind at a restaurant table at their restaurant. They're calling the "last dialed number" to see if they can get a name and address of who to return it to. So they call. It's the girlfriend, she's frantic in Spanish because her man hasn't called back, his name is (huh - I've forgotten his name and it was etched into my mind for months - guess he is anonymous now to me at last) and his address is X and thank you SO MUCH for returning the phone.
So I go to the police with a name and address and a story. He's on parole so they don't need a warrant to enter and search his place. I go for a ride along and they arrest the guy just before midnight literally 27 hours after he breaks into my house. He ruins my sleep on Tuesday night, I ruin his sleep Wed night, which he spends the first of many months in jail with no bail. My TV and money are gone but he's still had the Droid and that was enough. The apartment was full of stuff from a half-dozen other burglaries.
I called the Atlanta number the next day to tell her to quit calling my phone and gave her the jail number. (The restaurant staff had told me she was bilingual). She was really let down. Turned out she was pregnant by another man who had abandoned her and my guy had a one-way jet ticket out of town for the day after his arrest to go marry her and live happily ever after. He was on a break-in spree to raise cash before leaving town. Instead of a honeymoon week I sent him to the slammer for a year. I kinda felt bad about that, but not too much.