Trunk-Show Silver Streak When Marie Helene Morrow, the owner of 30-year-old Reinhold Jewelers in San Juan, Puerto Rico, discovered Saundra Messinger’s silver line a few years ago, she knew it was a perfect fit for her clients. But it took a recent trunk show to remind her of the collection’s popularity—and of the importance of in-store designer appearances.The events, which took place last fall at Reinhold’s two locations, focused on Messinger’s matte-finished sterling silver jewels, some set with brilliant-cut diamonds. The work of the Nyack, N.Y–based designer appeals to Morrowâ€