This is the first installment of a multi-part series looking at what I consider to be the middle child of the Souverän family, the M600. This first post will explore the history, features, and variations of the M600. In a follow-up post, I will be reviewing both the old and new style M600 pens in a head to head match-up. The M600 has one of the more interesting histories amongst Pelikan’s Souverän line-up and therefore is also prone to generate confusion amongst collectors. As I’ve described previously, the year 1997 saw many changes to the trim styles of both the Souverän and Tradition series of pens. Perhaps no pen was more affected than the M600 because not only did the trim change, the actual physical dimensions of the pen did as well. The M600 was originally introduced in 1985, a few years after the M400 was debuted. At that time, it had the same exact dimensions as the M400 but included an upgraded trim package. The initially available barrel colors included black (1985), burgundy (1989), and the familiar green striated (1990) variations. A tortoise version also exist but these are much less frequently encountered due to its limited production run.