In your country, you look on ebay and such to see if it pops up. But without attaching a GPS and Cell Phone tracker your set may not call home. Smart TV makers do have the capability to track such detail but in doing so may raise big questions like this one -> http://bgr.com/2013/11/20/lg-smart-tv-spying/
LG Television stolen on 4 july 2014. The following are the specification.