Historic district sells bits and pieces of history.. The Scene Along the south side of Pine Street, between Pennsylvania Hospital and Kahn Park, 15 antique shops open and close their doors when they want. Collectors, historians, art aficionados and just plain packrats own these places and most of them keep hours that are as inimitable as their collections. Treasures are too numerous and too various to list, from tiny silver salt dishes to mammoth Colonial chiffoniers. Each store claims a specialty that might not be apparent by window-shopping alone. Try the knob; if not, then the bell. With any luck, they'll let you in.