Has anyone ever seen a Stylomine with the wheat engraving on the clip? I see it in lots of old advertisements but I didn't think it was a real thing until I found a timeline stating a date it was introduced. Did they actually introduce this? I've been scouring the internet but I haven't been able to find any more information or even any actual pictures of the pen. Also does anyone know if there is a fairly complete list of the various models and descriptions/pictures? Thanks!