American Flyer No. 520 or 26520 Knuckle Coupler Kit w Envelope

Knuckle Coupler Kits have Two Knuckle Coupler Assemblies PA13CO38 - Two Split Rivets - Steel Brass or Copper Tube Used To Drive Out the Coupler Pin, Couplers Work Properly, Envelope M3267, Instructions are Printed on the Envelope, May Differ Slightly from Pictures Due to Play Wear Aging & American Flyer Production Variations.