Advise how to fix my Oyster Royal 1947

[frododeploert]

Im a newbie at this, always liked watches but never bought a high end watch.
Till this weekend, I was roaming around at one of the largest online auction sites and bought one without doing a proper background check.

Ive bought:
A vintage Rolex Oyster Royal ref 4444.
17 jewels 10 1/2 Hunter movement with serial number 575XXX

The only problem is that it is missing the winding stem and the crown.
All doesn't matter because I love the watch and would like to fix it. I've searched here on the forum for this movement but can't find much info on it.
Does anybody know the reference numbers of these parts?
Can I use the windingstem of a 1200 caliber or some other watch?
What kind of crown should this watch have?

All information is helpful