I just received a Sailor Sapporo Four Seasons Manyou fp. The cap and barrel are made of a metallic green resin. As I hope my pictures below show (despite the reflections) the barrel has swirls and striations that I've never seen on another Sailor resin pen or any high quality pen. I have seen them on cheaper plastic pens (Noodler's pens come to mind).
The cap is the same material and is without this issue except perhaps for a small mark at the top. It isn't clear to me whether this was intentional on Sailor's part or whether the plastic for this pen was poorly mixed or made.
Does anyone else own one of these pens or have seen one in person? If so, does/did it have the same issue?
Intentional or not, I find it quite unappealing.