When Montblanc issued its first limited-edition pen, a tribute to Lorenzo de’ Medici, in 1992, Barry Rubin became a man possessed. Since then the former CPA has collected more than a thousand rare and limited-edition writing instruments, or as he calls them, "art, five inches tall." Along with Montblancs, pens from Cartier, S.T. Dupont, David Oscarson, and Visconti belong to Rubin’s collection, which he showcases at his new by-appointment-only pen gallery, Ink (www.penstore.biz). Located in Minneapolis, the gallery features items such as those shown here (left to right): a $5,500 Krone Art of War, a $27,000 Montblanc solid rose gold fountain pen, and a $3,350 Montegrappa Aphrodite. . . . The Shak at Stanley Korshak (www.stanleykorshak.com) presents casual alternatives to the tailored clothing for which Korshak is better known. The new 11,000-square-foot space, located near his original shop in Dallas, highlights the best of the runway from John Varvatos, Polo Ralph Lauren, and other labels. The Shak’s clothes might be casual, but the store is serious about customer service. It offers personal shoppers and in-home closet cleaning.