* Change 1 Part Light Gray {3650a Technic, Gear 24 Tooth Crown (1st Version - Not Reinforced) to 3650b Technic, Gear 24 Tooth Crown (2nd Version - Reinforced)}
Comments from Submitter:
Source: sealed set contents.
Photos found on German site Ebay Kleinanzeigen (Ebay Classifieds), listing 1004287617. Fortunately, the batch code 1012 is visible, meaning this copy was produced in early March 1992. Since the release date was May 1992, it is very likely that this set always came with 3650b.