If you possess a key from this era, it is likely a (XXXXX-XXXXX-XXXXX-XXXXX-XXXXX). However, early 2012 batches occasionally used a shorter, 16-character format specific to the SCS website.
You cannot force Steam to download the 2012 build using a retail key. That code is just a ticket to the latest version. euro truck simulator 2 activation key 2012
Owning a key from that era means you technically own a piece of sim racing (well, trucking) history. But here is where the plot thickens. If you possess a key from this era,