My specialty seems to be buying filthy, battered pens and keeping nibmeisters in provender. This one was lurking in a case next to something that turned out to be a very tarnished Mabie Todd. I bought that one, too, but that's another forum. It's a 452 1/2 V with a pattern I've never seen before, but it had a bad crack at the barrel end which my jeweler has skillfully repaired. Perhaps someone knows what this pattern's called? Pictures below: