Claude Barthelemy seems to have been one of those if-you-needed-to-ask-you-didn't-need-to-know designers. In the '80's, he was listed as a young, hot couturier alongside go-the-distance blue chips like Karl Lagerfeld and Lanvin with his oversized sweaters, minis, leggings and fur-trimmed stoles. Exclusive stores carried his soft-edged jackets to shoppers in the know. And then what happened? His pleated skirts, intarsia sweaters, and naughty, zippered wool catsuits still fetch high prices in vintage world and any dealer with his elegantly simple, Gallic tag on her racks raises a flutter in second-hand seekers. He designed for Barbie, for heaven's sake! But the designer himself, who seems to have cut a meteoric swath across the runways and then...? So what's the story with this wasp-waisted pleated skirt? I wondered what else this woman could have dropped off on her Goodwill drive-by--a Chanel original? A couture Pucci? Surely someone this linked in wouldn't just ...