Looks like some kind of mechanical creature, possibly something to do with Telas, Worker Golems/Golems or Yalahar Factory Quarter.
The Tin Lizzard object is located in the lowest floor of the Factory Quarter north-east area, here.
Note that the Tin Key may break when used. The Tin Lizzard may also break, but the key is kept. The Lizzard will repawn a few hours later.
File:Teaser 2 Tin Lizzard.png