I use a T2, they are as stated previously the predessesor of T3. They are set running and you must print clockings prior to opening. Other than that you cant tell the difference, the front looks like a T3 and you review clockings like a T3 by pressing the button, runs bang on over 24 hours. £35 a bargain, if you dont want it pm me with the detail. I wouldnt put you off the one on Ebay, My father had one of those 25 year ago, again a good timekeeper and good clock. You had to be carefull when reading them off, I know one or two blokes who tried it on by reading it off a minute earlier than it was. Not sure if you can still get hold of the clock rolls and ink ribbons.
Steve