* Change 1 Part Black {6628 Technic, Pin with Friction Ridges Lengthwise and Tow Ball (Undetermined Hole Type) to 6628a Technic, Pin with Friction Ridges Lengthwise and Tow Ball with Round Pin Hole}
* Change 1 Part Black {6628 Technic, Pin with Friction Ridges Lengthwise and Tow Ball (Undetermined Hole Type) to 6628a Technic, Pin with Friction Ridges Lengthwise and Tow Ball with Round Pin Hole} (Extra)
Comments from Submitter:
From my personal collection. Set never mixed with other sets. And, yes, there was an extra tow ball pin in this set.