Hello, Greetings all, this watch belonged to my Danish grandfather, I have scoured the net for the name (I guess it is TN??) and the hallmarks, I even took it to an IWC shop where the an said he had no clue where it was from - can you perhaps help me? Thanks, I didn't find the right solution from the internet. Reference: http://vintagewatchforums.com/viewtopic.php?f=34&t=10110 Whiteboard video Examples