Image Item No. Description  DupAM1  Display Assembled Set, Duplo Castle 4777 in Plastic Case Catalog: Gear: Retail Display Case: DUPLO: Castle  ShellAM1  Display Assembled Set, Long Plastic Case Shell Promotional Series (shows sets 2535 through 2544) Catalog: Gear: Retail Display Case  ShellAM2  Display Assembled Set, Shell Promo Sets 1252, 1256 in Plastic Case Catalog: Gear: Retail Display Case: Town: Town Jr.: Gas Station  DesAM3  Display Assembled Set, Small Plastic Case - 4100 Maximum Wheels Catalog: Gear: Retail Display Case: Designer Sets: Traffic