J.B.Van Sciver Co.1960s dining set

This dining set was purchased sometime in the late 50s or sometime in the 60s in Philadelphia.area's J.B. Van Sciver Co. The set includes a one-piece china cabinet on 2 cabinets and 3 drawers. The glass portion ( 2 sets of 3 shelves) also has 2 light bulbs. The full set also includes a buffet that matches the bottom of the china cabinet. The table seats 6, but originally had 2 leaves to seat 9-12. The chairs were upholstered in a green, orange, and gold decor. The drawers have a French looking flower detail and the cabinets have elaborate fleur de lis. Is this walnut wood? How much is it worth?