One coupling on one coach is the knuckle type (presumably fitted to connect with a loco although they are easily changeable), all others are the ELC type.
RIVAROSSI CONCOR N GAUGE PASSENGER COACH CAR WAGONS 2X 85FT NEW YORK CENTRAL !
RIVAROSSI CONCOR N GAUGE PASSENGER COACH CAR WAGONS 5X 85FT PENNSYLVANIA !
CONCOR N GAUGE PASSENGER COACH CAR WAGONS & OBSERVATION 4X 85FT BALTIMORE & OHIO
RIVAROSSI CONCOR N GAUGE PASSENGER COACH CAR WAGONS +OBSERVATION 7X PENNSYLVANIA
Atlas/Concor - N Gauge - American outline 4 x mixed Wagons & Caboose
011 N Scale 85ft Passenger Car Storage Case Amtrak Viewliner Superliner