* Delete 1 Part x870a Black Electric, Train 4.5V Whistle Thick (match ID 1)
* Delete 1 Part x870cc02 Black Electric, Train 4.5V Whistle Thin with Black Base (Alternate) (match ID 1)
* Add 1 Part x870cc02 Black Electric, Train 4.5V Whistle Thin with Black Base
Comments from Submitter:
Just like in set 118, set 139A was never released with a thick whistle. The thick whistle is probably just a prototype shown on the box and instructions of set 118 and 138.