Ditto tomhorn's comments, except that I think Lange 1 reps are so far off that I would never wear 1. I have been searching for an accurate Lange 1 rep since long before I came to RWG & I have yet to see anything that does not shout rep. At the very least, to come even close to passing for a gen, a rep would need to have the large date feature, which was the hallmark of the 1 & something that the Asians have not been able to properly master.
To sate my Lange desires, I picked up a nice Grand Arkade in 2000, which is pretty good, but also lacks the big date. Though, on the Arkade, it is a less prominent feature, so it is much less of an issue