I called Citizen in California, and they do have part 087-105 in stock.
However 085A has no part of that number.
Now If you are talking about the Minute wheel and Pinion for a 0850A, it is part 072-1050
If you are talking about the Intermediate for second wheel it is part 087-1020 and Citizen has both in stock.
Here is a list of all parts https://boley.de/en/caliber/watchmovements/citizen/2047