This is a bit of an essay! Apologies. The first Sauvage F.P. (as I understand it) was the Moonstone Blue (AT 0316-1). It was one of four styles listed in the 2008 catalog. By 2010 the Moonstone had disappeared, only to be replaced by new styles: the ever-popular Azurite Blue and the Stingray. The Stingray F.P. was AT 0316-6. The next Sauvage was Ivory/Pearl. It appeared in 2011 listed as AT 0316-13 In 2012 the first of the "Zodiac" pens appeared: the "Dragon" pens, black and red, AT 0316-8 and AT 0316-9. The eagle-eyed will spot that between the 2010 Stingray and the 2012 Dragon there was a theoretical AT 0316-7. I have never seen one. I can think of three possibilities- 1. It never existed. Cross hopped over 7. (This possibility is the least exciting and the most likely.) 2. There is an unlisted Sauvage, in an unknown style. 3. There was a prototype 7 that never went into full production. Can anyone throw light on the "missing" AT 0316-7 ? PS - The FP serial would be AT 0316-7. The rollerball, if it existed 0315-7, and the ballpoint 0312-7. PPS - I have never had much luck asking such question of Cross, but if anyone knows of a contact, that would be great too.