Omega Dynamic 613 - advice please

I recently got this as a non runner. Easy to explain why. The inner stem is missing. My guess someone just pulled it right out years ago. Movement looks untouched. And it does run fine when wound. Unfortunately the crystal (original) is broken and missing a piece. The blue wedge is still in place which is encouraging. So the question is

1. can anyone assist with the ref for the split stem please, movement side male for a Cal613. Do these share the same stem with other 600 series movements.
2. Are original crystals with chrome tension ring available or are there any aftermarket alternatives?

Many thanks again to all members of this fine forum.

Just checking if anyone can advise me on this.

Thanks. I will continue to research

Can you look up the casenumber (on the inside of the case), I can find the original part numbers for you. Makes it easier to find the correct parts.
The glass is still available with Omega I think.
I do not think there is a “replica glass available. It needs to have the special edge so you lift it out of the case using the dedicated Omega glasslifters.