Need Help To Find Some Omega Part Numbers

[bigpops]

Basically my cousin bought a cheap (damaged) mid sized Seamaster, and he's given it to me to fix for him.

Now, the He valve is broken. The "stem" (well, valve i guess) for it is there, and so is the tube. The "crown" is missing.

The tube and crown are also broken. Half the tube is in the watch, the other half has part of the crown in it. The stem seems to be okay (i've removed it), as it still has part of the crown screwed onto it.

So, i need the part numbers for these. The case number 196.1622 (stainless steel):

Tube

Crown

Helium escape valve (complete, or just the outer part if possible)

I've searched Cousins in the UK, but their descriptions don't mention case numbers or model names. I've also searched Ofrei, but the case number draws a blank there.

Any help is appreciated.